The amount of usable water has always been of great interest in the world. ___36___ springs and streams sometimes means control, particularly in the ___37___ areas like the desert. The control is possible even without possession of large areas of ___38___ land. In the early days of the American West, gun fights were not ___39___ for the water resources (资源). And laws had to be ___40___ to protect the water rights of the ___41___ and the use of the water resources accordingly.
42___ is known to us all, there is not ___43___ water in all places for everyone to use as much as he likes. Deciding on the ___44___ of water that will be used in any particular period
45___ careful planning, so that people can manage and use water more ___46___. Farmers have to change their use of or demand for water ___47___ the water supply forecast (预报).
The ___48___ water supply forecast is based more on the water from the ___49___ than from the below. Interest is ___50___ in the ways to increase rainfall by man-made methods, and to get water from the winter snow on mountain ___51___. With special equipment, some scientists are studying the ways in which the mountain snow can be ___52___, and with the help of a repeater station, they send the ___53___ data (数据) to the base station. The operator at the base station can get the data at any time by ___54___ a button. In the near future, the forecast and use of water ___55___ probably depend on the advance knowledge of snow on mountains, not of water underground.
36. A. Using B. Holding C. Owning D. Finding
37. A. dry B. distant C. deserted D. wild
38. A. fine B. beautiful C. rich D. farming
39. A. unlawful B. unacceptable C. unpopular D. uncommon
40. A. made B. designed C. signed D. written
41. A. winners B. settlers C. fighters D. supporters
42. A. That B. It C. What D. As
43. A. plentiful B. enough C. any D. much
44. A. type B. quality C. amount D. level
45. A. requests B. requires C. means D. suggests
46. A. effectively B. easily C. conveniently D. actively
47. A. leading to B. due to C. owing to D. according to
48. A. correct B. further C. average D. early
49. A. clouds B. sky C. air D. above
50. A. raising B. rising C. building D. lasting
51. A. rocks B. tips C. cops D. trees
52. A. taken care of B. made use of C. piled up D. saved up
53. A. picked B. produced C. used D. gathered
54. A. touching B. knocking C. pressing D. turning
55. A. might B. can C. will D. should
Washoe is a young chimpanzee(黑猩猩). She is no ___1___ chimpanzee, though. Scientists are doing a research ___2___ her. They want to see how civilized(驯化) she can ___3___. Already she does many things a human being can do.
For example, she has been learning how to exchange ___4___ with people. The scientists are teaching her ___5___ language. When she wants to be picked ___6___, Washoe points up with one finger. She rubs her teeth with her finger ___7___ she wants to brush her teeth. This is done after every meal.
Washoe has also been ___8___ to think out and find answers to problems. Once she was put in a ___9___ with food hanging from the ceiling. It was too high to ___10___. After she considered the ___11___, she got a tall box to stand ___12___. The food was still too high to be reached. Washoe found a ___13___ pole. Then she climbed onto the ___14___, grasped the pole, and ___15___ down the food with the pole.
Washoe ___16___ like a human, too. The scientists keep her in a fully furnished(家具齐全的) house. After a hard ___17___ in the laboratory, she goes home. ___18___ she plays with her toys. She ___19___ enjoys watching television before going to bed.
Scientists hope to ___20___ more about people by studying our closest relative(亲属) — chimpanzee.
1. A. foolish B. ordinary C. special D. simple
2. A. for B. by C. to D. on
3. A. experience B. change C. develop D. become
4. A. actions B. views C. messages D. feelings
5. A. sign B. human C. spoken D. foreign
6. A. out B. at C. on D. up
7. A. when B. until C. since D. while
8. A. raised B. trained C. ordered D. led
9. A. cave B. zoo C. room D. museum
10. A. pull B. see C. eat D. reach
11. A. problem B. position C. food D. ceiling
12. A. by B. on C. up D. with
13. A. straight B. strong C. long D. big
14. A. wall B. box C. ceiling D. pole
15. A. knocked B. picked C. took D. shocked
16. A. lives B. acts C. thinks D. plays
17. A. task B. lesson C. day D. time
18. A. Here B. There C. So D. Then
19. A. quite B. already C. even D. still
20. A. observe B. discover C. gain D. learn
Of all living creatures on earth, insects are the most plentiful. Some 1 are very useful to man, for example, bees, 2 we get honey and wax, and silkworms, which 3 us with silk. Other varieties, 4 , are extremely harmful, and do a great 5 of damage, especially to crops. Locusts are perhaps the most dangerous of all, 6 they will eat almost any green 7 , and when millions of them 8 on cultivated land they soon leave it 9 . In some countries they are the farmers’ 10 enemy. Another nuisance is the common 11 , not only because it 12 us indoors and out-of-doors, but because it spreads diseases.
Scientists have given much time and 13 to the study of insects. It needs the most careful and 14 observation. Thanks 15 their discoveries we now know almost all 16 is to be known about the habits of these hardworking insects, bees and ants, which live in 17 better planned in some ways than our 18 . But the most valuable work has been done in trying to give 19 to men, animals and crops from the 20 which insects cause.
1．A．members B．forms C．qualities D．varieties
2．A．by which B．from which C．of which D．in which
3．A．give B．produce C．offer D．supply
4．A．however B．meanwhile C．offer D．supply
5．A．majority B．number C．amount D．what’s more
6．A．and B．for C．if D．when
7．A．grass B．field C．fruit D．plant
8．A．settle B．attack C．pass D．cross
9．A．bare B．nothing C．empty D．untouched
10．A．hardest B．greatest C．serious D．wildest
11．A．insect B．creature C．fly D．enemy
12．A．dislikes B．bites C．worries D．hates
13．A．understanding B．ideas C．comprehension D．thought
14．A．serious B．patient C．curious D．long
15．A．for B．of C．to D．with
16．A．that B．which C．there D．what
17．A．societies B．crowds C．teams D．organizations
18．A．world B．nation C．selves D．own
19．A．help B．protection C．living D．defense
20．A．injury B．wound C．sickness D．ruin
Mary and Peter were having a picnic with some friends near a river when Mary shouted, “Look! That's a spaceship up there and it's going to land here.”
Frightened by the strange spaceship, _ 61 of the young people got into their cars and drove away as quickly as possible. Peter loved Mary and always stayed close to her. They, more __62 than frightened, watched the spaceship land and saw a door open. When nobody came out, they went to look __63 it. In the center of the floor, there was a pile of food. Peter followed Mary into the spaceship and did not __64 the door close behind him. The temperature fell rapidly and two young people lost their __65 .
When they came to, they were __66 to see that they were back by the river again. The spaceship had gone. __67 car was nearby.
“What happened?” asked Mary.
Peter scratched his head, saying slowly, “Don't ask me. Perhaps we had a __68 . Come on.It's time to go home.”
After driving about fifty meters, they found their way blocked by a thick wall made of something like __69 . On the other side of the wall, a few strange beings stopped to look through it and read a notice which, translated into English, said: “New arrivals at the zoo: a pair of __70 inhabitants in their natural surroundings with their house on wheels.”
61. A. both B. all C. several D. most
62. A. tired B. curious C. confused D. astonished
63. A. at B. for C. into D. around
64. A. hear B. watch C. let D. make
65. A. way B. weight C. speech D. consciousness
66. A. pleased B. disturbed C. surprised D. disappointed
67. A. A B. Another C. Their D. No
68. A. game B. dream C. mistake D. problem
69. A. glass B. stone C. wood D. steel
70. A. city B. space C. land D. Earth
Once in a blue moon there is one on New Year's Eve. Revelers ringing in 2010 will be treated to a so-called blue moon. According to popular definition, a blue moon is the second full moon in a month. But don't 1 it to be blue - the name has nothing to 2 the color of our closest celestial（天体） neighbor.
A full moon 3 on December 2. It will appear again on Thursday in time for the New Year's countdown.
"If you're in Times Square, you'll see the 4 moon right above you. It's going to be that brilliant," said Jack Horkheimer, director emeritus of the Miami Space Transit Planetarium and host of a weekly astronomy TV show.
The New Year's Eve blue moon will be 5 in the United States, Canada, Europe, South America and Africa. For partygoers in Australia and Asia, the full moon does not show up 6 New Year's Day, making January a blue moon month for them.
However, the Eastern Hemisphere can celebrate with a partial lunar eclipse（月蚀） on New Year's Eve when 7 of the moon enters the Earth's shadow. The 8 will not be visible in the Americas.
A full moon occurs 9 29.5 days, and most years have 12. 10 , an extra full moon in a month - a blue moon - occurs every 2.5 years. The 11 time there was a lunar double take was in May 2007. New Year's Eve blue moons are rarer, occurring every 19 years. The last time was in 1990; the next one won't 12 again until 2028.
Blue moons have no astronomical 13 , said Greg Laughlin, an astronomer at the University of California, Santa Cruz.
"`Blue moon' is just a 14 in the same sense as a `hunter's moon' or a `harvest moon,'" Laughlin said in an e-mail.
The popular definition of blue moon 15 after a writer for Sky & Telescope magazine in 1946 misunderstood the Maine Farmer's Calendar and marked a blue moon as the second full moon in a month. In fact, the calendar 16 a blue moon as the third full moon in a season with four full moons, not the usual three.
Though Sky & Telescope corrected the 17 decades later, the definition caught on. For purists（语言纯正癖者）, however, this New Year's Eve full moon doesn't even qualify as a 18 moon. It's just the first full moon of the winter season.
In a tongue-in-cheek essay 19 on the magazine's Web site this week, senior contributing editor Kelly Beatty wrote: "If skies are clear when I'm 20 celebrating, I'll take a peek（眯着眼睛看） at that brilliant orb（天体） as it rises over the Boston skyline to see if it's an icy shade of blue. Or maybe I'll just howl."
( ) 1. A. wish B. wait C. hope D. expect
( ) 2. A. deal with B. do with C. develop with D. form into
( ) 3. A. occurred B. came C. ran D. went
( ) 4. A. full B. half C. bright D. part
( ) 5. A. out of sight B. visible C. big D. clear
( ) 6. A. until B. when C. before D. since
( ) 7. A. part B. all C. any D. none
( ) 8. A. moon B. eclipse C. sun D. shadow
( ) 9. A. each B. every C. either D. all
( ) 10. A. On the whole B. Generally speaking C. On average D. In addition
( ) 11. A. last B. next C. other D. another
( ) 12. A. go B. see C. come D. look
( ) 13. A. point B. evident C. theory D. significance
( ) 14. A. name B. object C. phenomenon D. tradition
( ) 15. A. created B. came about C. made D. copied
( ) 16. A. named B. called C. introduced D. defined
( ) 17. A. error B. name C. reality D. number
( ) 18. A. blue B. red C. yellow D. grey
( ) 19. A. published B. posted C. printed D. written
( ) 20. A. in B. out C. away D. on
At the beginning of this century, medical scientists made an interesting discovery; we are built not just of flesh and blood but also of time. They were 36 to show that we all have “a body clock” 37 us, which controls the 38 and fall of our body energies, 39 us different from one day one to the next.
The 40 of “a body clock” should not be too 41 since the lives of most living things are controlled 42 the 24 hour night-and-day cycle. We feel 43 and fall asleep at night and become 44 and energetic during the day. If the 24 hour-cycle is 45 , most people experience unpleasant 46 . For example, people who are not 47 to working at night can find that 48 of sleep causes them to 49 badly at work.
50 the daily cycle of sleeping and 51 , we also have other cycles which 52 longer than one day. Most of us would 53 that we feel good on some days and not so good on 54 ; sometimes our ideas seem to flow and at other times, they 55 do not exist.
36．A．anxious B．able C．careful D．proud
37．A．inside B．around C．between D．on
38．A．movement B．supply C．use D．rise
39．A．showing B．treating C．making D．changing
40．A．invention B．opinion C．story D．idea
41．A．difficult B．exciting C．surprising D．interesting
42．A．from B．by C．over D．during
43．A．dull B．tired C．dreamy D．peaceful
44．A．regular B．excited C．lively D．clear
45．A．disturbed B．shortened C．reset D．troubled
46．A．moments B．feelings C．senses D．effects
47．A．prevented B．allowed C．expected D．used
48．A．miss B．none C．lack D．need
49．A．perform B．show C．manage D．control
50．A．With B．As well as C．Except D．Rather than
51．A．working B．moving C．living D．waking
52．A．repeat B．remain C．last D．happen
53．A．agree B．believe C．realize D．allow
54．A．other B．the other C．all other D．others
55．A．just B．only C．still D．yet
Cutting meat production and consumption by 30 percent would help to reduce carbon emissions(排放) and improve health in the most meat-loving nations, scientists said on Wednesday.
Using prediction models, British and Australian researchers 1 that improving efficiency, increasing carbon capture and 2 fossil fuel dependence in farming would not be enough to 3 emissions targets.
But combining these steps 4 a 30 percent reduction in livestock（家畜） 5 in major meat-producing nations and a similar 6 in meat-eating, would lead to "substantial population health benefits" and cut emissions, they said.
The study found that in Britain, a 30 percent 7 intake of animal-source saturated（饱和的） fat by adults would reduce the 8 of premature（过早的） deaths from heart disease by some 17 percent -- equivalent to 18,000 premature deaths reduced in one year.
In Sao Paulo, Brazil, it could mean as 9 as 1,000 premature deaths reduced in a year, they said.
10 the United Nations Food and Agricultural Organization, 18 percent of all greenhouse gas emissions are from meat production and experts say rising 11 for meat, particularly in countries with growing economies, could 12 livestock production up by 85 percent from 2000 levels 13 2030.
The scientists said global action was needed to maximize the benefits of cutting meat production and 14 , and that the environmental 15 "may apply only in those countries that currently have high production levels."
The study was 16 in The Lancet medical journal as part of a series in climate change and health 17 the Copenhagen global climate summit scheduled next month.
In a second study, British scientists found that increased walking and cycling, and 18 cars, would have a much greater impact on health 19 low-emission vehicles in rich and middle-income countries.
Andrew Haines, director of the London School of Hygiene and Tropical Medicine and head of the research series, said delegates at Copenhagen needed "to understand the potential 20 impacts of their plans."
( ) 1. A. invented B. experimented C. found D. proved
( ) 2. A. increasing B. speeding C. stopping D. reducing
( ) 3. A. meet B. change C. break D. adapt
( ) 4. A. by B. with C. to D. in
( ) 5. A. sale B. eating C. production D. use
( ) 6. A. cut B. increase C. addition D. consumption
( ) 7. A. lower B. higher C. more D. less
( ) 8. A. amount B. number C. quantity D. deal
( ) 9. A. much B. many C. few D. little
( ) 10. A. According to B. Apart from C. As well as D. In addition to
( ) 11. A. resistance B. fear C. demand D. anxiety
( ) 12. A. weaken B. strengthen C. drive D. broaden
( ) 13. A. in B. by C. from D. after
( ) 14. A. evaluation B. consumption C. process D. store
( ) 15. A. advantage B. disadvantage C. pollution D. improvement
( ) 16. A. written B. claimed C. delivered D. published
( ) 17. A. along with B. from behind C. ahead of D. in front of
( ) 18. A. more B. fewer C. no . none
( ) 19. A. then B. as C. that D. than
( ) 20. A. health B. body C. spirit D. emotion
Don't blame genes for aging facial skin. A new study of twins suggests you can 1 those coarse(粗糙的) wrinkles, brown or pink spots, and dilated(膨胀的) blood vessels on too much time in the sun, smoking, and being overweight.
Because twins share genes, but may have 2 exposures to environmental factors, studying twins allows an, "opportunity to control for genetic susceptibility(敏感性)," Dr. Elma D. Baron, at Case Western Reserve School of Medicine in Cleveland, Ohio, and colleagues 3 in the latest issue of Archives of Dermatology.
Their analysis of environmental skin-damaging factors in 65 pairs of twins hints that skin aging is 4 more to environment and lifestyle than 5 factors.
But when it 6 skin cancer, the researchers say their findings support previous reports that 7 environment and genes affect skin cancer risk.
Baron's team 8 facial skin of 130 twins, 18 to 77 years old, who lived 9 in the northern Midwest and Eastern regions of the U.S. who were 10 the Twins Days Festival in Ohio in August 2002.
At this time, each of the twins also 11 reported how their skin burned or tanned 12 sunscreen(防晒霜), their weight, and their history of skin cancer, smoking, and alcohol drinking.
The study group 13 of 52 fraternal and 10 identical twin pairs, plus 3 pairs who were unsure of their twin status. Identical(同卵的) twins share all of their genes and fraternal twins share only about half.
From these data, the researchers 14 strong ties, outside of twin status, between smoking, older age, and being overweight, and having facial skin with evidence of environmental 15
16 contrast, sunscreen use and drinking alcohol appeared correlated with 17 skin damage.
Baron and colleagues say the current findings, which highlight ties between facial 18 and potentially avoidable 19 factors -- such as smoking, being overweight, and 20 overexposure to the sun's damaging rays -- may help motivate people to minimize these risky behaviors.
( ) 1. A. blame B. owe C. take D. bring
( ) 2. A. same B. different C. similar D. common
( ) 3. A. explain B. confirm C. declare D. shout
( ) 4. A. equal B. related C. close D. strict
( ) 5. A. characteristic B. personal C. natural D. genetic
( ) 6. A. comes to B. talks of C. refers to D. gets to
( ) 7. A. all B. neither C. both D. either
( ) 8. A. examined B. checked C. inspected D. interviewed
( ) 9. A. most B. usually C. mostly D. always
( ) 10. A. joining B. representing C. attending D. remarking
( ) 11. A. separately B. lonely C. commonly D. truly
( ) 12. A. with B. on C. in D. without
( ) 13. A. consisted B. made up C. contained D. included
( ) 14. A. documented B. recorded C. reported D. noted
( ) 15. A. damage B. exploration C. protection D. material
( ) 16. A. In B. By C. As D. At
( ) 17. A. lesser B. more C. no D. fewer
( ) 18. A. look B. aging C. expression D. wrinkle
( ) 19. A. environmental B. genetic C. emotional D. psychological
( ) 20. A. protected B. planned C. unprotected D. prevented
Once in a blue moon there is one on New Year's Eve. Revelers ringing in 2010 will be treated to a so-called blue moon. According to popular definition, a blue moon is the second full moon in a month. But don't 1 it to be blue - the name has nothing to 2 the color of our closest celestial（天体） neighbor.
A full moon 3 on December 2. It will appear again on Thursday in time for the New Year's countdown.
"If you're in Times Square, you'll see the 4 moon right above you. It's going to be that brilliant," said Jack Horkheimer, director emeritus of the Miami Space Transit Planetarium and host of a weekly astronomy TV show.
The New Year's Eve blue moon will be 5 in the United States, Canada, Europe, South America and Africa. For partygoers in Australia and Asia, the full moon does not show up 6 New Year's Day, making January a blue moon month for them.
However, the Eastern Hemisphere can celebrate with a partial lunar eclipse（月蚀） on New Year's Eve when 7 of the moon enters the Earth's shadow. The 8 will not be visible in the Americas.
A full moon occurs 9 29.5 days, and most years have 12. 10 , an extra full moon in a month - a blue moon - occurs every 2.5 years. The 11 time there was a lunar double take was in May 2007. New Year's Eve blue moons are rarer, occurring every 19 years. The last time was in 1990; the next one won't 12 again until 2028.
Blue moons have no astronomical 13 , said Greg Laughlin, an astronomer at the University of California, Santa Cruz.
"`Blue moon' is just a 14 in the same sense as a `hunter's moon' or a `harvest moon,'" Laughlin said in an e-mail.
The popular definition of blue moon 15 after a writer for Sky & Telescope magazine in 1946 misunderstood the Maine Farmer's Calendar and marked a blue moon as the second full moon in a month. In fact, the calendar 16 a blue moon as the third full moon in a season with four full moons, not the usual three.
Though Sky & Telescope corrected the 17 decades later, the definition caught on. For purists（语言纯正癖者）, however, this New Year's Eve full moon doesn't even qualify as a 18 moon. It's just the first full moon of the winter season.
In a tongue-in-cheek essay 19 on the magazine's Web site this week, senior contributing editor Kelly Beatty wrote: "If skies are clear when I'm 20 celebrating, I'll take a peek（眯着眼睛看） at that brilliant orb（天体） as it rises over the Boston skyline to see if it's an icy shade of blue. Or maybe I'll just howl."
( ) 1. A. wish B. wait C. hope D. expect
( ) 2. A. deal with B. do with C. develop with D. form into
( ) 3. A. occurred B. came C. ran D. went
( ) 4. A. full B. half C. bright D. part
( ) 5. A. out of sight B. visible C. big D. clear
( ) 6. A. until B. when C. before D. since
( ) 7. A. part B. all C. any D. none
( ) 8. A. moon B. eclipse C. sun D. shadow
( ) 9. A. each B. every C. either D. all
( ) 10. A. On the whole B. Generally speaking C. On average D. In addition
( ) 11. A. last B. next C. other D. another
( ) 12. A. go B. see C. come D. look
( ) 13. A. point B. evident C. theory D. significance
( ) 14. A. name B. object C. phenomenon D. tradition
( ) 15. A. created B. came about C. made D. copied
( ) 16. A. named B. called C. introduced D. defined
( ) 17. A. error B. name C. reality D. number
( ) 18. A. blue B. red C. yellow D. grey
( ) 19. A. published B. posted C. printed D. written
( ) 20. A. in B. out C. away D. on
For some people, the sight of a mouse can be reason to scream. For other mice, the same sight can be reason to sing.
Mice will probably 21 sing their way to any concert, but researchers in the United States have found 22 that mice do, 23 , sing.
Scientists already knew that mice make ultrasonic(超声波) sounds—noises that are too high-pitched(高音的) for people to hear 24 special equipment.
To find out whether mice put such sounds together in song-like 25 , the researchers recorded the sounds of 1 mice. Using computer 26 , they were able to separate the sounds into specific types of syllables(音节), and found the mice produced about 10 syllables per second.
The results showed that nearly all of the mice repeated sequences(顺序) of syllables in different patterns. That’s enough to meet the definition of what scientists 27 song. But not all scientists are 28 _ that what the mice are doing is 29 singing. To prove it, the researchers must show that there’s learning involved. And, they need to __ 30 why the mice sing.
21. A. almost B. even C. never D. usually
22. A. coincidence B. evidence C. guidance D. instance
23. A. at once B. by means C. for example D. in fact
24. A. during B. inside C. through D. without
25. A. fashions B. instructions C. patterns D. styles
26. A. access B. printer C. screen D. software
27. A. call B. hear C. sing D. write
28. A. accustomed B. convinced C. involved D. qualified
29. A. actually B. obviously C. simply D. unlikely
30. A. figure out B. get about C. run across D. talk over
For some people, the sight of a mouse can be reason to scream. For other mice, the same sight can be reason to sing.
Mice will probably 21 sing their way to any concert, but researchers in the United States have found 22 that mice do, 23 , sing.
Scientists already knew that mice make ultrasonic(超声波) sounds—noises that are too high-pitched(高音的) for people to hear 24 special equipment.
To find out whether mice put such sounds together in song-like 25 , the researchers recorded the sounds of 1 mice. Using computer 26 , they were able to separate the sounds into specific types of syllables(音节), and found the mice produced about 10 syllables per second.
The results showed that nearly all of the mice repeated sequences(顺序) of syllables in different patterns. That’s enough to meet the definition of what scientists 27 song. But not all scientists are 28 _ that what the mice are doing is 29 singing. To prove it, the researchers must show that there’s learning involved. And, they need to __ 30 why the mice sing.
21. A. almost B. even C. never D. usually
22. A. coincidence B. evidence C. guidance D. instance
23. A. at once B. by means C. for example D. in fact
24. A. during B. inside C. through D. without
25. A. fashions B. instructions C. patterns D. styles
26. A. access B. printer C. screen D. software
27. A. call B. hear C. sing D. write
28. A. accustomed B. convinced C. involved D. qualified
29. A. actually B. obviously C. simply D. unlikely
30. A. figure out B. get about C. run across D. talk over
Once in a blue moon there is one on New Year's Eve. Revelers ringing in 2010 will be treated to a so-called blue moon. According to popular definition, a blue moon is the second full moon in a month. But don't 1 it to be blue - the name has nothing to 2 the color of our closest celestial（天体） neighbor.
A full moon 3 on December 2. It will appear again on Thursday in time for the New Year's countdown.
"If you're in Times Square, you'll see the 4 moon right above you. It's going to be that brilliant," said Jack Horkheimer, director emeritus of the Miami Space Transit Planetarium and host of a weekly astronomy TV show.
The New Year's Eve blue moon will be 5 in the United States, Canada, Europe, South America and Africa. For partygoers in Australia and Asia, the full moon does not show up 6 New Year's Day, making January a blue moon month for them.
However, the Eastern Hemisphere can celebrate with a partial lunar eclipse（月蚀） on New Year's Eve when 7 of the moon enters the Earth's shadow. The 8 will not be visible in the Americas.
A full moon occurs 9 29.5 days, and most years have 12. 10 , an extra full moon in a month - a blue moon - occurs every 2.5 years. The 11 time there was a lunar double take was in May 2007. New Year's Eve blue moons are rarer, occurring every 19 years. The last time was in 1990; the next one won't 12 again until 2028.
Blue moons have no astronomical 13 , said Greg Laughlin, an astronomer at the University of California, Santa Cruz.
"`Blue moon' is just a 14 in the same sense as a `hunter's moon' or a `harvest moon,'" Laughlin said in an e-mail.
The popular definition of blue moon 15 after a writer for Sky & Telescope magazine in 1946 misunderstood the Maine Farmer's Calendar and marked a blue moon as the second full moon in a month. In fact, the calendar 16 a blue moon as the third full moon in a season with four full moons, not the usual three.
Though Sky & Telescope corrected the 17 decades later, the definition caught on. For purists（语言纯正癖者）, however, this New Year's Eve full moon doesn't even qualify as a 18 moon. It's just the first full moon of the winter season.
In a tongue-in-cheek essay 19 on the magazine's Web site this week, senior contributing editor Kelly Beatty wrote: "If skies are clear when I'm 20 celebrating, I'll take a peek（眯着眼睛看） at that brilliant orb（天体） as it rises over the Boston skyline to see if it's an icy shade of blue. Or maybe I'll just howl."
( ) 1. A. wish B. wait C. hope D. expect
( ) 2. A. deal with B. do with C. develop with D. form into
( ) 3. A. occurred B. came C. ran D. went
( ) 4. A. full B. half C. bright D. part
( ) 5. A. out of sight B. visible C. big D. clear
( ) 6. A. until B. when C. before D. since
( ) 7. A. part B. all C. any D. none
( ) 8. A. moon B. eclipse C. sun D. shadow
( ) 9. A. each B. every C. either D. all
( ) 10. A. On the whole B. Generally speaking C. On average D. In addition
( ) 11. A. last B. next C. other D. another
( ) 12. A. go B. see C. come D. look
( ) 13. A. point B. evident C. theory D. significance
( ) 14. A. name B. object C. phenomenon D. tradition
( ) 15. A. created B. came about C. made D. copied
( ) 16. A. named B. called C. introduced D. defined
( ) 17. A. error B. name C. reality D. number
( ) 18. A. blue B. red C. yellow D. grey
( ) 19. A. published B. posted C. printed D. written
( ) 20. A. in B. out C. away D. on
For some people, the sight of a mouse can be reason to scream. For other mice, the same sight can be reason to sing.
Mice will probably 21 sing their way to any concert, but researchers in the United States have found 22 that mice do, 23 , sing.
Scientists already knew that mice make ultrasonic(超声波) sounds—noises that are too high-pitched(高音的) for people to hear 24 special equipment.
To find out whether mice put such sounds together in song-like 25 , the researchers recorded the sounds of 1 mice. Using computer 26 , they were able to separate the sounds into specific types of syllables(音节), and found the mice produced about 10 syllables per second.
The results showed that nearly all of the mice repeated sequences(顺序) of syllables in different patterns. That’s enough to meet the definition of what scientists 27 song. But not all scientists are 28 _ that what the mice are doing is 29 singing. To prove it, the researchers must show that there’s learning involved. And, they need to __ 30 why the mice sing.
21. A. almost B. even C. never D. usually
22. A. coincidence B. evidence C. guidance D. instance
23. A. at once B. by means C. for example D. in fact
24. A. during B. inside C. through D. without
25. A. fashions B. instructions C. patterns D. styles
26. A. access B. printer C. screen D. software
27. A. call B. hear C. sing D. write
28. A. accustomed B. convinced C. involved D. qualified
29. A. actually B. obviously C. simply D. unlikely
30. A. figure out B. get about C. run across D. talk over
You are a German living in Berlin. One day you’ re walk¬ing down the street, minding your own business, when sudden¬ly a stranger comes up with a smile on his face. After stopping you, he holds a small electronic device (装置) close to his face and speaks slowly into it, saying, in English," Can you tell me where I can buy some sauerkraut?" What should you do? (a) Run away; (b) Call the police; or (c) Listen closely for the device to say in German," Konnen Sie mir bitte sagen, welches sauerkraut haufen kann?"
The most proper answer would be (c) because the person in front of you is only a tourist trying to enjoy himself. The de¬vice is said to be the world’s first portable(便携的) translator — a hand-held microcomputer that at the same time translates one spoken language into another. The four-pound, battery-op¬erated product is called the Voice, and it is the invention of Advanced Products and Technologies, an American electronics company. When the Voice is introduced in the Unite States in late April — at a price of (1,500 — it will be used to trans¬late spoken English into Italian, German, French and Span¬ish. The product comes with separate cartridges(盒式存储器) for each of the four languages, which can be changed when the user travels from one country to another. It will be sold in Eu¬rope soon after the US introduction, with cartridges that trans¬late Italian, German, French and Spanish into English.
The Voice uses a microchip(微型集成电路片) to trans¬late languages. It is Started by voice command and produces voice output through a built-in speaker. When the user makes a statement or asks a question, the Voice immediately repeats what has been said in another language.
1. The device held by the stranger is probably a kind of________.
A. a two-way radio B. language translator
C. easily-carried speaker D. a multi-functioned computer
2. What does the last sentence of the first paragraph mean?
A. Can you tell me where I can buy some sauerkraut?
B. Can I ask for some information from the police?
C. Would you like to try my device?
D. Would you not run away if I ask you where to buy some sauerkraut?
3. When the stranger says," Can you tell... sauerkraut?" he is ________.
A. learning German from his device
B. asking you the way to the sauerkraut shop
C. making fun of you with his device
D. testing his device for fun
4. Which of the following is not mentioned in the text?
A. The price of the hand-held microcomputer.
B. The function of the product Voice.
C. The producer pf the small electronic device.
D. The number of the device sold to the European coun¬tries.
Of all living creatures on earth, insects are the most plentiful. Some 36 are very useful to man, for example, bees, 37 we get honey and wax, and silkworms, which 38 us with silk. Other varieties, 39 , are extremely harmful, and do a great 40 of damage, especially to crops. Locusts （蝗虫） are perhaps the most dangerous of all, 41 they will eat almost any green 42 , and when millions of them 43 on cultivated land（耕地）they soon leave it 44 . In some countries they are the farmer’s 45 enemy. Another nuisance is the common 46 , not only because it 47 us indoors and out - of- doors, but because it spreads diseases.
Scientists have given much time and 48 to the study of insects. It needs the most careful and 49 observation. Thanks 50 their discoveries we now know almost all 51 is to be known about the habits of these hardworking insects, bees and ants, which live in 52 better planned in some ways than our 53 . But the most valuable work has been done in trying to give 54 to men, animals and crops from the 55 which insects cause.
36．A. members B. forms C. qualities D. varieties
37．A. by which B. from which C. of which D. in which
38．A. give B. produce C. offer D. supply
39．A. however B. meanwhile C. therefore D. what's more
40．A. majority B. number C. amount D. quantity
41．A. and B. for C. if D. when
42．A. grass B. field C. fruit D. plant
43．A. settle B. attack C. pass D. cross
44．A. bare B. nothing C. empty D. untouched
45．A. hardest B. greatest C. serious D. wildest
46．A. insect B. creature C. fly D. enemy
47．A. dislikes B. bites C. worries D. hates
48．A. understanding B. ideas C. comprehension D. thought
49．A. serious B. patient C. curious D. long
50．A. for B. of C. to D. with
51．A. that B. which C. there D. what
52．A. societies B. crowds C. teams D. organizations
53．A. world B. nation C. selves D. own
54．A. help B. protection C. living D. defense
55．A. injury B. wound C. sickness D. ruin
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