China has named the nation's first Mars rover（火星车）Zhu Rong.For all of us，Zhu Rong is a well﹣suited name.
In an ancient Chinese story，Zhu Rong had the face of a man and the body of an animal.He rode on two dragons.When he had a big fight with Gong Gong，the god of water，Zhu Rong won.But after the fight，the human world came into complete darkness.Then he brought fire from heaven（天国）to the world.
"Zhu Rong is regarded as the earliest god of fire in traditional Chinese culture，" a space official said. "The first Mars rover was named Zhu Rong.The name symbolizes（象征）light and hope for space exploration（探索）in our country，and means to guide humans to continue exploration."
After leaving the earth last summer，Zhu Rong circled Mars for several months and landed on it in May.In recent years，our country has sent up the world's first quantum satellite（量子卫星），and Chang'e﹣4 has made a soft landing on the moon.We have made great progress in space technology and will soon start building our own space station.
（1）What Zhu Rong brought from heaven to the world was .
| A． |
fire |
| B． |
wars |
| C． |
water |
| D． |
animals |
（2）For China's space exploration，the name Zhu Rong symbolizes .
| A． |
a big fight |
| B． |
complete darkness |
| C． |
light and hope |
| D． |
Chinese culture |
（3）The underlined word "it" in the last paragraph refers to" "
| A． |
the earth |
| B． |
Mars |
| C． |
the moon |
| D． |
the sun |
（4）According to the passage，we can infer that .
| A． |
Zhu Rong is a bad person in an ancient Chinese story |
| B． |
China has made great progress in space technology |
| C． |
the writer is proud of China's space technology |
| D． |
the official doesn't like the name Zhu Rong |
Most viruses can be found and killed by our immune system as soon as they enter our bodies.However，some viruses，for example，the coronavirus，are sneaky.They are difficult to recognize and find.These viruses can cause deadly diseases，like COVID﹣19.Human﹣to﹣human transmission can easily occur，and pandemic will therefore break out.Vaccination is by now a simple，safe and effective way to protect us from the diseases.
▲Vaccines are something that "looks" exactly the same as the viruses，mainly made from the viruses that are weakened or killed.They will not make us really ill.They only stimulate and activate our immune system to work，telling it something harmful is coming in.The immune system will know what the "viruses" look like，and send B cells（lymphocytes）or antibodies to find and kill them.Meanwhile，B cells will remember them for the next kill.A vaccine may also give us passive immunity by providing B cells taken from an animal or a human to play the same role.
Scientists have developed more than 180 vaccines to fight against COVID49.The technical approaches of these vaccines can be a little different，but their aims are the same.
Take the inactivated vaccine as an example.In an inactivated vaccine，the coronaviruses are already killed or made into the ones unable to produce more new viruses.When the immune system "sees" them，it will try to kill them.The question is：without enough these viruses• how can B cells remember them？That's why we need to take the vaccine more than one time.Though this vaccine is safe，it might not be as effective as it is expected to be.
The live﹣attenuated vaccine is different.In this vaccine，the viruses are weakened，but they are alive.They can produce enough new viruses to train the immune system to kill and remember them，so people only need to take the vaccine once.The live﹣attenuated vaccine is considered the most effective，but there is a worry：what might happen once these viruses wake up？
Therefore，although vaccination is by now one of the best ways to protect us from COVID﹣19，it can be better.
（1）The coronavirus can .
| A． |
not be killed |
| B． |
not be found |
| C． |
cause deaths |
| D． |
stop pandemic |
（2）Which of the following can be the best topic sentence of Paragraph 2？
| A． |
Vaccination can provide us with B cells. |
| B． |
Vaccines are made from different viruses. |
| C． |
Vaccination can prepare us against viruses. |
| D． |
Vaccines won't make us ill as the viruses do. |
（3）Compared to the inactivated vaccine，the live﹣attenuated vaccine .
| A． |
needs taking more than once |
| B． |
is equally safe |
| C． |
contains viruses that are killed |
| D． |
is more effective |
（4）What can we learn from the passage？
| A． |
Vaccination is good enough to treat COVID﹣19. |
| B． |
The immune system can be more effective with vaccines. |
| C． |
The viruses in inactivated vaccines can make new viruses. |
| D． |
180 vaccines have been developed to fight against diseases. |
The first emperor of China，Qin Shihuang，completed a huge number of projects during his rule.Between 221 and 210 B.C.，he started the building of the Great Wall.The emperor also ordered the building of a huge army of life﹣sized terracotta soldiers（士兵）.These，he hoped，would protect his tomb after his death.
Lost in Time
The soldiers in Xi'an's terracotta museum are today light brown，but they weren't always.They began as an army of red，blue，yellow，green，white，and purple.Sadly，most of the colors did not last to the present day.After being exposed（暴露）to air during digging，the coating under the paint began to fall off.The paint disappeared in less time than it takes to boil an egg，taking away with it important pieces of history.
New Technology
Now new technology is starting to show the army's true colors.Archeologists（考古学家）have recently discovered an area with more than a hundred soldiers.Many of these still have their painted features，including black hair，pink faces，and black or brown eyes.Chinese and German researchers have developed a chemical liquid（液体）to help save the soldiers' colors.After finding a soldier or another art piece，archeologists put the liquid on it. They then cover it in plastic.
Back to Life
Archeologists are also finding colors in the dirt around the soldiers.It's important not to do anything with the dirt，so the colors won't be lost. "We are treating the dirt as an art piece， "says Rong Bo，the museum's leading archeologist.The next challenge，says Rong Bo，is to find a way to use the colors onto the army﹣again.Once that happens，artists can bring Emperor Qin's army back to its full，bright colors.
（1）What is the passage mainly about？
A.The death of Emperor Qin Shihuang.
B.How the terracotta army was colored.
C.The true colors of the terracotta soldiers.
D.How the soldiers lived during Qin Dynasty.
（2）What does the underlined word "They" in the passage refer to？
A.Archeologists.
B.Artists.
C.Researchers.
D.Soldier.
（3）Which statement would Rong Bo probably agree？
A.The soldiers should stay in their present，brown color.
B.People should try to bring back the army's bright colors.
C.Archeologists can only guess at the soldiers' true colors.
D.Artists should be able to paint the soldiers in colors they want.
Named after the "quest for heavenly truth"，Tianwen 1，China's first Mars probe（探测器），has given us impressive pictures of the red planet.The first high﹣resolution（高分辨率的）pictures of Mars taken by Tianwen 1 were made public by the China National Space Administration（CNSA）on March 4.
"These are the first close﹣up pictures of Mars' surface taken by China， " said Bao Weimin，a scientist of the Chinese Academy of Sciences.
The pictures were taken at different distances from Mars.The two black﹣and﹣white pictures were taken by the high﹣resolution camera on Tianwen 1 when the probe was about 330﹣350 kilometers above the Martian surface.As for the color picture，it was taken by Tianwen 1's medium﹣resolution（中分辨率的）camera when the probe was about 5，000 kilometers above the red planet. Itshows Mars' North Pole.
The high﹣resolution camera can take both color and panchromatic（全色的）pictures.Panchromatic pictures，which are black and white，are the clearest，having the largest amount of data for scientific study，said Liu Tongjie.The medium﹣resolution camera，can only produce lesser clear pictures.Scientists put the panchromatic and color pictures together to form a clear and beautiful color picture，Liu added.
Tianwen 1，the country's first independent Mars task，was sent up on July 23，kicking off the nation's planetary exploration program.The probe entered its preset orbit above Mars on Feb 24 and is looking for a landing site on the planet's largest plain.The probe is expected to land on the red planet sometime between May and June.
（1）When were the first high﹣resolution photos of Mars made public by CNSA？
| A． |
On Feb 24. |
| B． |
On March 4. |
| C． |
On July 23. |
（2）What does the word " It" refer to in paragraph 3？
| A． |
The color picture. |
| B． |
The black﹣and﹣white picture. |
| C． |
The clear and beautiful picture. |
（3）What do we know about the pictures according to the text？
| A． |
The first close﹣up pictures of Mars' surface were taken at different distances from Mars. |
| B． |
The color pictures have the largest amount of data for scientific study. |
| C． |
The clearest pictures were taken by the medium﹣resolution camera. |
（4）What will be most probably discussed next？
| A． |
Tianwen 1 will take more pictures of Mars. |
| B． |
Tianwen 1 will land on the red planet，Mars. |
| C． |
Tianwen 1 will do some scientific research on Mars. |
What time does your school start？Do you wish you could get up later every morning？You are not alone if your answer is "Yes." In the US，many middle school students have the same wish.
In America，many schools start before 7：30 am.But that may change soon.A new law has been passed in California.According to the law，middle schools should not start before 8：00 am.The government hopes school children will have longer time in bed.
Many scientific studies show that teenagers are more active in the afternoon and in the evening.Simply telling them to go to bed earlier doesn't work well.Most of them don't get enough sleep because of bad sleeping habits and early school starting time.They need more sleep in the morning.Scientists suggest middle schools should start at 8：00 am.or later.Students can get well ready to learn and they won't fall asleep in class.______The change can help improve students' grades.
While scientists are happy with the new law，many parents disagree with it.They won't be able to send their children to school before they go to work.They also fear that later school starting time will lead to later ending time.As a result，their children will have less time to take part in after﹣school activities.
It's good news that Chinese education experts have noticed the problem and made some rules about that.So what's your opinion？Do you expect China to pass a similar law？
（1）The schools shouldn't start according to the new law in California.
| A． |
before 7：30 a.m. |
| B． |
after 7：30 a.m. |
| C． |
after 8：00 a.m. |
| D． |
before 8：00 a.m. |
（2）Why don't most of the teenagers get enough sleep？
| A． |
Because their parents need them to do housework. |
| B． |
Because their sleeping habits are bad and schools start early. |
| C． |
Because they play computer games ill ate. |
| D． |
Because they have too much homework. |
（3）Which sentence do you think can be filled in the blank in paragraph 3？
| A． |
They can put on weight. |
| B． |
They will like their teachers. |
| C． |
They will join more clubs. |
| D． |
They will pay more attention to classes. |
（4）What can we know from the passage？
| A． |
The government of New York has passed a new law. |
| B． |
All the parents disagree with the law. |
| C． |
Later school starting time may lead to fewer after﹣school activities. |
| D． |
Teenagers are more active in the morning. |
（5）From the passage，we can infer（推断）that .
| A． |
students should have enough sleeping time in the writer's opinion |
| B． |
students in California will have less sleeping time |
| C． |
Chinese experts aren't worried about students' sleeping time |
| D． |
China has already passed a similar law |
Several months ago，Chinese COVID﹣19 vaccines（疫苗）were put to use widely.Our government offers free vaccines to Chinese people.Here is some information you need to know.
How is the vaccine given？
It is given by injection（注射）.There are several ways to get injected.For the most common way，you are supposed to get it twice.After the first injection，you have to get the second one.
Is the vaccine bad for human bodies？
Some people are afraid that the vaccines are dangerous and may make them sick.In fact the vaccines have been tested for a long time.They won't cause any diseaseInstead，they can protect our bodies from being hurt.
Who is suitable？
Medical researches have shown that Chinese vaccines are suitable for most people.And people aged 18 to 59 would be the first ones to get injection.Our government expects people over 60 who are in good health to get injected as well.You'd better ask doctors for advice at first.
Should we still wear a face mask？
Yes.It takes a few weeks or the body to build the ability to fight the COVID﹣19 after injection.Sometimes the vaccines might not work well in the body.So it's best to keep wearing face masks in public and wash your hands often.
（1） can get the COVID﹣19 vaccines first in China.
| A． |
People of all ages |
| B． |
People aged 3 to 17 |
| C． |
People aged 18 to 59 |
| D． |
People aged 60 and above |
（2）The underlined word "disease" means in the passage.
| A． |
illness |
| B． |
trouble |
| C． |
headache |
| D． |
pressure |
（3）From the passage，we can know that the vaccines .
| A． |
will make people sick |
| B． |
can protect people from being hurt |
| C． |
can only be given in two ways |
| D． |
are very expensive |
（4）People should still wear masks after injection because .
| A． |
their bodies need time to build the ability |
| B． |
the masks can make them more beautiful |
| C． |
they may catch a cold more easily |
| D． |
the masks help the vaccines to work |
（5）This passage mainly talks about .
| A． |
physical health |
| B． |
face masks |
| C． |
doctors' advice |
| D． |
vaccine injection |
Have you ever imagined the life in space？The following will show you the astronauts' daily life.
• Eating in space
If you go camping for more than a week with some friends，you will make sure you have plenty of foods and keep them properly.At the end of your camping trip，you would deal with your rubbish properly before the ride home.
Astronauts almost do the same thing when they go to space.Preparation changes with the food type.Some foods can be eaten in their natural forms，such as chocolate cakes and fruits.Other foods require adding water，such as cheese.Of course，an oven is provided at the space station to heat the food.But there are no fridges，so space food must be kept properly.
• Sleeping in space
After a long day at work，nothing is better than a good night's sleep!Just like on the earth，in space astronauts go to bed at a certain time，then get up and prepare for work again.When going to sleep，they have to attachthemselves，so they don't float （漂浮） around or hit their bodies against something.They usually use sleeping bags located in small crew cabins （乘员舱）.Each crew cabin is just big enough for one person.Generally，astronauts have an eight﹣hour sleep each day when they finish their task.
• Doing sports in space
Exercise is an important part of every astronaut's daily life to prevent muscle loss （肌肉萎缩）.Usually，astronauts exercise two hours every day.Lifting 200 pounds on the earth may be a lot of work.But lifting that same object in space would be much easier.That means the things for exercise need to be specially designed，so astronauts can receive the exercise needed.
Living in space is not just all work and no play.Astronauts have fun，too.They like to look out the window and play with their food.Fun plays an important role in the quality of their life.
（1）The writer starts to explain eating in space by .
| A． |
telling a story |
| B． |
asking a question |
| C． |
giving an example |
| D． |
comparing two facts |
（2）What does the underlined word " attach" in Paragraph 4 mean？
| A． |
Tie. |
| B． |
Hide. |
| C． |
Catch. |
| D． |
Carry. |
（3）It is much easier for people in space than on the earth.
| A． |
to fall asleep |
| B． |
to lift heavy things |
| C． |
to prevent muscle loss |
| D． |
to eat cold food |
（4）In which part of a newspaper can we read the passage？
A.CULTURE.
B.SOCIETY.
C.SCIENCE.
D.HISTORY.
After opening a free online Harry Potter center in April，British writer J K.Rowling brings even more good news.
In May，Rowling started writing a new story called The Ickabog，which was free to read online to help amuse people who stayed at home because of COVID﹣19.
The new story centers around a monster （怪物）known as the Ickabog，a fiercechild﹣eating monster who lives in the northern tip of an imaginary land known as Cornucopia and has super powers.
Though the book is written for children，it is also fascinating to adults.It talks about many things，such as weak leadership，and suppression （镇压）of disagreement.
"The Ickabog is a story about truth and the abuse （滥用）of power，" Rowling wrote on the website."The themes are timeless and could be used in any era or any country."
Rowling put the first two chapters online on May 26，with daily writing to follow until July 10.
She is also panning 10 publish （出版）the book in print later this year and then give away the money from its sales to projects and organizations helping the groups most influenced by COVID﹣19.
（1）When did Rowling begin writing the new story The Ickabog online？
| A． |
In April. |
| B． |
In May. |
| C． |
In June. |
| D． |
In July. |
（2）What does the underlined word "fierce" in Paragraph 3 probably mean？
| A． |
凶猛的. |
| B． |
失落的. |
| C． |
善良的. |
| D． |
兴奋的. |
（3）Which theme is mentioned in the story The Iekabog？
| A． |
COVID﹣19. |
| B． |
Good leadership. |
| C． |
The abuse of power. |
| D． |
Working together. |
（4）How did Rowling finish The Ickabog？
| A． |
She finished the whole story in one go. |
| B． |
She wrote part of it every day online. |
| C． |
She printed the story by herself. |
| D． |
She told the whole story twice. |
（5）From the end of the passage，we can most probably learn Rowling is .
| A． |
helpful |
| B． |
famous |
| C． |
hard﹣working |
| D． |
powerful |
A small cloud moves slowly through the air in a hospital operating room （手术室）.In the room a patient with cancer（癌症），lies on a table.The cloud is all around the patient，covering her body and filling her lungs（肺）.The cloud is not smoke.It is made of millions of nano﹣robots（纳米机器人）.These tiny robots move from cell （细胞） to cell in the patient's body，killing the cancer.
Fighting cancer with nano﹣robots is only an idea today，but scientists say that it could be possible in the future.Using nano﹣robots for good purposes such as fighting the illness or repairing the environment may be the way to many of today's problems.
However，nano﹣robots could be a dangerous risk as well.Because nano﹣robots are so tiny，they will have to work in large teams of many thousands to many millions.For this reason，nano﹣robots will have to be programmed（被编程）to build themselves.Scientists will not have the ability to build millions of nano﹣robots one by one.
This ability to re﹣produce is making some scientists worried.What will happen if something goes wrong in the programming？Quite a lot of crazy nano﹣robots would be far worse than any illness.Some people think that if they get out of control，nano﹣robots could make the Earth gone.
What should be done？Should we continue researching nano﹣robots or should we search for other methods？This is one of the many difficult decisions that we have to make in the future.
（1）What is the cloud in the passage？
A.Smoke in the air.
B.Millions of nano﹣robots.
C.Something full of drops of water.
D.Clothes to cover a patient.
（2）What does the underlined word it in Paragraph 2 refer to（指代）？
A.Fighting cancer with nano﹣robots.
B.Moving from cell to cell.
C.Killing the cancer.
D.Repairing the environment.
（3）Which of the following is NOT the reason why some scientists are worried about using nano﹣robots？
A.Nano﹣robots have the ability to build themselves.
B.Something may go wrong in the programming.
C.Scientists have to build millions of nano﹣robots one by one.
D.Nano﹣robots in large teams may be out of control.
（4）What does the writer think of using nano﹣robots in the future？
A.He agrees to the idea.
B.He disagrees to the idea.
C.He doesn't talk about his own opinion.
D.He is crazy about it.
（5）What is the best title？
A.Future Robots
B.The Ways to Fight Cancer
C.Nano﹣robots in Use
D.A Cloud of Hope and Danger
With her eyes feeling increasingly tired and her vision blurry（视力模糊的），l6﹣year﹣old Tian Ting went to the hospital with her parents in January.She was shocked when she found out that her eyesight dropped from 5.0 to 4.6 in only a term. "A few of my friends have had the same experience lately，" Tian said.
In fact，poor eyesight among Chinese primary and high school students rose from 59.2 percent to 70.6 percent in the first six months of 2020，according to the Ministry of Education.
To protect students' eyesight，the Chinese government has worked out new requirements （要求） for school supplies （供应品） and equipments that will take effect （生效） on March 1，2022.For example，according to the requirements，the size of text in students' textbooks should be no smaller than nine﹣point.Teachers should also try not to use projectors （投影仪） or other multimedia equipments （多媒体设备） that are too bright，Beijing Daily reported.There are also requirements for desks and classroom lights.For example，these lights should give off （散发） as little blue light as possible.
Blue light is bad for our eyes，as it can kill the photoreceptor cells （光感器细胞） we need for vision，according to Harvard Medical School.Many of the electronic devices we use every day，like our phones and computer screens，give off blue light.
Chinese government has also taken other steps to protect students' eyesight in China.In May 2020，the National Health Commission urged schools to make sure that students have at least two hours of outdoor activity a day.
（1）In the first half of 2020，there were of students becoming short﹣sighted.
A.0.4%
B.11.4%
C.59.2%
D.70.6%
（2）The writer probably agrees that .
A.Schools use textbooks with the smaller size of text
B.Teachers use over﹣bright multimedia equipments
C.Students are made sure to have fewer than two hours of outdoor activity a day
D.Schools use lights that give off less blue light
（3）What's the best title of the passage？
A.How to protect us from illness.
B.How to have outdoor activity.
C.How to use electronic devices.
D.How to protect students' eyesight.
"I spent my whole life doing one thing，" Gu Fangzhou once said.Known as "the father of sugar pills （糖丸）"，Gu passed away on January 2，2019.Eight months later，he received a national honorary﹣title （荣誉称号） "the People's Scientist" for his polio （脊髓灰质炎） research.
Gu Fangzhou，a famous medical scientist，was born in June，1926.Gu's family faced a difficult time with the sudden death of his father.He studied hard and finally entered Peking University as a medical student in 1944.After graduation，Gu made the decision to work to help improve public health.
In 1955，polio broke out in Nantong，Jiangsu Province.It paralyzed （使瘫痪） 1，680 people，mostly children aged below seven.It spread to neighboring areas and resulted in 466 deaths.Gu was asked to lead polio research in 1957. "At that time the only way to prevent polio was to invent a vaccine （疫苗），" said Gu.
In 1959 Gu succeeded in developing the first polio live vaccine.Later，he developed the "sugar﹣coated pill" vaccine in the early 1960s.It not only tasted better but was more affordable and easier to keep.To test the vaccine，Gu tried the vaccine in person and later his one﹣month﹣old son was vaccinated.This inspired his team to vaccinate their kids.They became the first group of people in China to try a polio vaccine. "If we don't believe in what we produce，how can others believe in it？" said Gu.
Gradually，the sugar﹣coated polio vaccine was made available in China.It saved millions of people，especially kids，from being disabled.In 2000，the World Health Organization （WHO） announced that China was already a polio﹣free country. "We feel satisfied.I can tell people that I tried my best，and your kids will no longer get polio，" said Gu. "That's all we hoped for. "
（1）What was Gu Fangzhou's age when he passed away？
A.About 89.
B.About 93.
C.About 95.
D.About 96.
（2）Who were the first group of people to try a polio vaccine in China？
①Gu Fangzhou himself.②Gu Fangzhou's partners' kids.
③Gu Fangzhou's parents.④Gu Fangzhou's son.
A. ①②③
B. ①③④
C. ②③④
D. ①②④
（3）Which of the following is Not mentioned in the passage？
A.Gu got married in his twenties.
B.Gu entered Peking University to study medicine in 1944.
C.Since 2000，China has become a polio﹣free country.
D.Gu received a national honorary﹣title "the People's Scientist" after his death.
（4）What is the writer's purpose in writing the passage？
A.To introduce the research about the polio vaccine.
B.To report an important medical invention.
C.To introduce a great medical scientist.
D.To show Chinese polio vaccine to the world.
In 1987 a small company named Huawei was started in Shenzhen.After more than 30 years of development，the company has now beaten Apple and become the world's second largest maker of smartphones.It has also become the world's supplier （供应者） of 5 G.In China and even in the world，Huawei is a wonder.Although it started producing mobile phones not many years ago，it has become one of the most famous phone companies.
But recently，Huawei faces some difficulties.The US government made a law to stop its sales in America.American officials said Huawei gave information that it collected to the Chinese government.At the same time，the US government planned to stop selling parts and services to Huawei.They believed that Huawei's business would be hurt this way.
"We have never received such a request from the Chinese government and we have never tried to get into other systems to collect information，" Ren Zhengfei，Huawei's president said. "The law would have little effect on our company.Huawei has enough ability to deal with the problems，" Ren added.
In an interview several years ago，Ren Zhengfei said， "I started Huawei with only £4000 at the beginning，but now it has become a 100 billion company.The experience was not as romantic as you imagine."
Facing the law of the US，Huawei is growing.Huawei's smartphone sales around the world rose 50 percent compared with a year earlier in the first three months of 2019.At the same time，sales from both Samsung and Apple fell.So far Huawei has grown into the world's largest telecommunication equipment supplier （供应商），selling in 170 countries.It may beat Samsung as the largest smartphone maker in the near future.
（1）How many kinds of smartphones are mentioned in total in this passage？
A.One.
B.Two.
C.Three.
D.Four.
（2）Which of the following sentences is TRUE according to the passage？
A.Huawei collected the information for the Chinese government.
B.Ren Zhengfei started Huawei with only £4000 in 1987.
C.Huawei has beaten Samsung，a South﹣Korea phone maker so far.
D.Huawei has developed its business smoothly.
（3）What does the underlined word "romantic" in Paragraph 4 mean in Chinese？
A.浪漫的.
B.现实的.
C.成功的.
D.麻烦的.
（4）The last paragraph mainly tells us .
A.Huawei has become one of the most famous phone companies.
B.Huawei has become the largest maker of smartphones in the world.
C.Huawei has got into some systems of the US.
D.Huawei is full of hope and must succeed in the future.
Since NASA's Viking Task tested Martian soil back in the 1970s，we've known that Mars （火星） is covered with a desert—harmful to life as we know it.But since tasks to Mars paid attention to what lies under the desert，a different picture has started to appear.
This discovery of water under the Mars' South Pole is the result of radar echoes （雷达回波） that were picked up by an instrument on a spaceship that's been moving around Mars for 15 years.To stay liquid （液体） under the long﹣frozen desert of Mars，the researchers say this lake must have a lot of salts mixed in it.
It is very cold and saltiness would make it a very hard environment for any living thing.But the lead researcher，Professor Roberto Orosei from the Italian National Institute for Astrophysics，said it was not impossible for things to live there.
To search for life in this newly discovered lake，scientists will need to send a robot that's able to make a hole through the mile of ice covering it.But at least the teams looking for life on Mars will now know where to start their search.
正确的写"T"，错误的写"F"。
（1）NASA's Viking Task found water in the 1970s.
（2）The researchers believe there must be lots of salts in the underground lake.
（3）It's possible that there are living things in the newly discovered lake.
（4）In order to find where water is，scientists must use a robot to make a hole through the mile of ice.
It seems that food deliverymen （送货员） are always rushing in haste.We can always see them running every minute，and they seem to have lots of things to do the next minute.They wear blue，red or yellow helmets （头盔） and many of them don't follow traffic rules.They drive on the wrong side of the road and run red lights.They use mobile phones when they are driving.
However，not everything goes well with food deliverymen.In the first half of 2017，food deliverymen had 76 traffic accidents in Shanghai.That means every two and a half days，a food deliveryman will die or get hurt on the road.
What makes deliverymen take such risks？The strict rules of the food delivery companies and the worried customers may be the answer.Many companies will fine （罚款） a deliveryman up to 2，000 yuan if he can't deliver the food on time，reported China Daily.Fines also go to those who get bad reviews from customers.
To solve the problem，food delivery service companies need to do some changes.Some cities are also taking action.Shanghai has asked companies to train their deliverymen on traffic rules and safety.Now in Shenzhen，if a deliveryman breaks traffic rules more than twice，then he can't do the job for a whole year.
（1）The underlined phrase "in haste" in Paragraph 1 probably means in Chinese.
| A． |
匆忙地 |
| B． |
慢慢地 |
| C． |
意外地 |
| D． |
犹豫地 |
（2）The first paragraph mainly tells us that many food deliverymen .
| A． |
work very hard |
| B． |
break traffic rules |
| C． |
are good at driving |
| D． |
use mobile phones too much |
（3）How many reasons are mentioned for deliverymen's taking risks of breaking traffic rules？
| A． |
Two. |
| B． |
Three. |
| C． |
Four. |
| D． |
Five. |
（4）If a food deliveryman ，the companies will fine him.
| A． |
drives too slowly |
| B． |
delivers food on time |
| C． |
obeys traffic rules |
| D． |
gets bad reviews from his customers |
（5）What is the main idea of the last paragraph？
| A． |
Traffic rules are too strict to deliverymen. |
| B． |
Food deliverymen cannot drive on important roads in the future. |
| C． |
Some cities are working to solve the problem and make things better. |
| D． |
All the companies in China train their deliverymen on traffic rules and safety. |
The Brightest Star in the Sky
Yuan Longping is one of the most famous scientists.He regards himself as a farmer because he does his research in the fields.In fact，his sunburnt face and arms and his slim，strong body are just like those of millions of farmers.Dr.Yuan Longping grows what is called super hybrid （杂交性的） rice.In 1974，he became the first agricultural （农业的） pioneer in the word to grow rice hat has a high output（产量）.This special rice makes it possible to produce one﹣third more of the crop in the same fields.Now more than 60% of the rice produced in China each year is from the hybrid rice strain （品种，种类）.He was born in Beijing in 1930.Since he graduated from Southwest Agricultural College in 1953，finding ways to grow more rice has been his life goal.He searched for a way to increase rice harvests without expanding （扩大，增加） the area of the fields.
In a recent research，these increased harvests mean that 22% of the world's people are fed from just 7% of the farmland in China.India，Vietnam and many other less developed countries have planted super hybrid rice to increase their rice harvests.
Unluckily，he died on May 22，2021.Though he was ill in bed，he still cared about his rice in the fields.He always said，"A man is just like a seed.Please be a good seed." Yuan works for the people not only in China but also around the world.He has become a hero and is remembered in everyone's heart forever.He is called "the brightest star in the sky" by his students.
（1）What does Yuan Longping do？
| A． |
A farmer. |
| B． |
A pioneer. |
| C． |
A scientist. |
| D． |
A hero. |
（2）Why does Yuan Longping call himself a farmer？
| A． |
Because of his sunburnt face and arms. |
| B． |
Because of his working place in the fields. |
| C． |
Because of his slim and strong body. |
| D． |
Because of his research of super hybrid wheat. |
（3）Yuan Longping was years old when he became the first agricultural pioneer in the world.
| A． |
68 |
| B． |
91 |
| C． |
44 |
| D． |
89 |
（4）According to the passage，which of the following is TRUE？
| A． |
This special rice can produce about one third more than usual ones in the same fields. |
| B． |
60% of the rice output is from common strains. |
| C． |
7% of the world's people are fed by China. |
| D． |
The production from 22% of the farmland can't satisfy the need of China. |
（5）What can we learn from him？
| A． |
Practice makes perfect. |
| B． |
When in Rome，do as the Romans do. |
| C． |
The early bird catches the worm. |
| D． |
Where there is a will，there is a way. |
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