Every one of us gets so used to punctuation marks that not many of us give them a second thought. Actually, the ancient Greeks wrote this way. The lack of punctuation marks probably didn’t bother good readers, though. As they read, they just put pauses where they fit best. Also at this time, sentences switched directions. A sentence read from left to right. The next one read right to left, and then left to right again, etc. The ancient Romans sometimes punctuated like this: They put something that can separate words in a sentence. The word punctuation actually comes from this idea and the Latin word punctum, which means a dot.
When the 5th century arrived, there were just two punctuation marks: spaces and points. The spaces separated words while the points showed pauses in reading. Then in the 13th century, a printer named Aldus Manutius tried to standardize punctuation. He always used a period for a complete stop at the end of a sentence. He used a slash (/) to indicate a short pause. Over time, that slash was shortened and curled, and it became the modern comma (逗号).
Since that time, other marks have enlarged the punctuation family. The exclamation mark (感叹号) comes from the Latin word io. It means “exclamation of joy.” The question mark originally started out as the Latin word questio, meaning question. Eventually, scholars put it at the end of a sentence to show a question.
Punctuation even keeps changing nowadays. New marks are coming into existence, and old punctuation marks are used in new ways. Take for example the “interrobang”. This 1962 invention combines the question mark and exclamation mark for times when writers want both. For example, “She did what?” or “How much did you pay for that dress?” Obviously, the interrobang is not widely used or recognized yet, but its invention shows that English is not yet finished with its punctuation.
From the first paragraph, we can know that _______.
A.good readers had trouble reading without punctuation marks |
B.a sentence always read from left to right in ancient Greece |
C.ancient Greeks switched the direction of punctuation marks |
D.the use of punctuation marks can date back to ancient times |
The passage is developed _______.
A.by time | B.by space |
C.by comparison | D.by importance |
We can learn from the passage that _______.
A.ancient Romans didn’t use any punctuation marks |
B.exclamation and question marks came from Latin |
C.spaces and slashes were already used before the 5thcentury |
D.Aldus Manutius first started to use commas |
What can be concluded from the last paragraph?
A.The combination of two marks will not work. |
B.It takes time for people to accept new punctuation marks. |
C.Old punctuation marks need to be standardized. |
D.Punctuation marks are still changing today. |
假如你们学校要举行一场名为“诵读经典,热爱我校”的朗诵比赛,请你以学生会的名义,写一份通知。
参考词汇:朗诵比赛recital contest; 校园campus; 散文 prose
写作要求:只能用5个句子表达全部内容。
评分标准:句子结构准确,信息内容完整,篇章连贯。
Notice
Student Union
.
.
.
.
.
.
首先请阅读下列图片及文字说明:
A. Drop-Bar Road Bikes
Generally lighter in weight than the typical mountain or comfort bike,road bikes are good for multiple pavement uses including fitness riding,commuting,long-distance/event rides,touring and racing.
Drop-bar handlebars are lightweight and aerodynamic and are a better choice if you want to go faster or are more concerned with efficiently transferring your energy into making the bike move forward. They also allow for a greater number of riding and hand positions than flat-bars.Their more aerodynamic riding position (bent over at the waist) may put more strain on your back if you are less flexible.
B. Flat-Bar Road Bikes
Flat-bar handlebars combine the efficiency of drop-bar road bikes with a slightly more upright riding position.This allows you to sit up in a higher and more relaxed position so you can better see the road and potential risks.An upright position also reduces strain on your hands,wrists and shoulders.This increased versatility comes with the tradeoff of being slightly less efficient (from an aerodynamic standpoint) than the typical drop-bar road bike.
C. Hardtail Mountain Bikes
Mountain Bikes are best for dirt or rocky trails and gravel roads; they are OK for pavement too (with tire change).
Hardtail bikes feature a front suspension fork and a rigid back with no rear suspension shocks.This type of mountain bike is much less expensive and lighter in weight than a typical full-suspension mountain bike.A hardtail is the more versatile choice if you plan to use it for both paved and unpaved surfaces.The tradeoffs from a full-suspension mountain bike? A hardtail is less able to safely handle more technical singletrack trails,provides less overall shock absorption and,in some situations,delivers less rear wheel traction.
D. Full-Suspension Mountain Bikes
Full-suspension mountain bikes have both front and rear suspension shocks making them ideal for backcountry trails or technical (steep,bumpy,twisty) singletrack.They also stand up to more aggressive riding including jumps or drops of up to 5 feet.As mentioned above,full-suspension bikes are more expensive and generally heavier than hardtail bikes.
E.Folding bikes
These bikes can be folded up and placed in a carrying bag,which makes them handy for commuters with limited storage space at home or the office.They are lightweight yet strong and can be folded up quickly and easily.Folding bikes are also a good choice for those who want to travel with their bike.
F.Electric-assist bikes
These bikes feature a battery-powered motor that can help you climb hills easily or make your commute less strenuous.Built-in sensors can monitor how much pressure you're putting on the pedals and then apply battery power accordingly.
以下是一些用户信息,请把图片与相关介绍匹配起来。
Tom is a bike lover.He wants to buy a road bike that can go fast on the road. Speed is important but it is more important for him to see the road and stay safe,since the road on which he rides is often full of traffic.
Jack is an office worker.Every day he goes to work by subway.There is still a long way from where he lives to the subway station,so he decides to buy a bike,which can be easily put at home,on the subway train and his office.
Peter loves making long-distance journey by bike.When travelling,he has to climb hills or ride on rocky trails,which makes him too tired to go.He wants to continue his journey even when he is tired,but he doesn’t want to travel by car or ride his motorbike.
Mark is a bike enthusiast who often rides in the mountainous areas.Unfortunately,his bike was damaged when he was riding on the mountain.Now he is going to buy a new mountain bike.Being a rich man,Mark doesn’t care about the price of the bike,but it must be tough and flexible enough to jump and drop on the mountain road.
Jim needs a new mountain bike that can be ridden on both paved and unpaved surfaces.It doesn’t need to be too expensive.He hopes to buy a bike that is lighter in weight than a typical full-suspension mountain bike
_________ a certain doubt among the students as to the necessity of the work.
A.It existed | B.There existed |
C.They had | D.There had |
完形填空,阅读下面短文,从短文后各题所给的四个选项(A、B、C、和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
With his leg lame(瘸的)and his teeth uneven(参差不齐的), the boy almost thought of himself as the most unfortunate child in the world. ________ did he play with his classmates, and when asked to answer questions, he always ________ his head without a word.
One spring, his father brought home some young trees. ________ of his children would plant a young tree and he promised, “Whoever ________his young tree best shall get a favorite gift.” The boy certainly wanted to get his father’s gift. ________ he seeing his brothers and sisters watering the trees, an idea ________ him: he hoped the tree he planted would die soon. So watering it once or twice, he never ________ it.
Several days later, when the little boy went to see his tree again, he was ________ to find that not only did it not die, but also grew so many fresh ________ . Compared with those of his brothers and sisters, his appeared greener. His father kept his ________, bought the little boy one of his favorite ________ and said that from the tree he planted, he would surely become an outstanding botanist(植物学家)when he grew up.
From then on, the little boy slowly became ________ and confident. One night, he suddenly ________ that his biology teacher once said that plants ________ grow at night. Why not go to see his tree?
When he came to the courtyard, he found his father was working near his tree! Instantly he ________ : his father had been secretly ________ his small tree! He returned to his room, with tears ________ in his eyes.
Decades passed. The little boy didn’t become a botanist. ________ , he became the U.S. president. His name was Franklin Roosevelt.
________ is the best nourishment(滋养品)of life. ________ it is just a bucket of water, it can make the tree of life grow well!
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
I can well remember that I was once asked to deliver a speech titled “A Real Test in My Life” before the whole class at the age of 9! You can imagine how (terrible) shy I was with so many eyes (fix) upon me. I had no (choose) but to prepare for it, though. First of all, I was to draft the speech, which was just a piece of cake for me, a good writer. But the hardest part (lie) in my oral presentation from my memory— for to read from the paper was not allowed. The real moment began I stood on the platform with my legs trembling and my mind blank. But my listeners were waiting patiently without any signs of rushing me. Gradually I found myself back, (deliver) my speech with difficulty. After what seemed to be a hundred years, I found my audience applauding— I made ! From then on, my fear of talking before an audience disappeared. Actually with my (confident) building up, I now turn out to be a great speaker. Looking back, I know the greatest difficulty on our way success is our fear. Overcome it we will be able to achieve our goals.
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。(如果所用的答题卡没有E、F、G选项,则选E涂A、B,选F涂A、C,选G涂A、D。)
How to Be Creative
Most of us think that creativity is a quality belonging only to artists, writers, or dancers, rather than ourselves. The following tips are a great beginning for developing our creativity.
1. Get out of your comfort zone
We eagerly accept the familiar and fear the unknown. Break out of your usual patterns and welcome creativity into your life. As stated earlier, the human brain was designed to recognize patterns. In fact, our comfort zone is nothing more than a collection of patterns. As we become more efficient at recognizing and using patterns, we rely less on creativity to find new paths. We should force ourselves out of our comfort zones and open up new possibilities.
2. Try different things
If you always do what you’ve always done, you’ll always get what you’ve always got. We are creatures of habits and routines, and creativity hates routines. If you usually drive to work, take the subway for a few days. Interrupt your routine, experiment and try something new. New things are often creative, but the same old thing never is.
Having a great idea is not enough, you must work to make it a reality. Have you ever seen a new product and realized that you thought of the same thing long ago? Yet someone else is making money with “your” idea. The difference between a dreamer and a doer is action. Do whatever it takes to bring your ideas to life. If you can put them into practice, you are well on your way to improving your creativity in all areas of your life.
A.Take action |
B.Seek several options |
C.Think from the other person’s point of view. |
D.If you normally eat in the office, have lunch under a tree. |
E. The truth is that we are all born with the capacity to be creative.
F. We continue to create patterns and routines for almost everything we do.
G. We all have great ideas sometimes, but only a few people turn their ideas into reality.
Parents do need to teach their kids financial responsibility and that money is earned. Still, many child-development experts agree that tying a child’s allowance to chores can be a slippery slope. Here’s why.
Susie Walton, master instructor at Peace in Your Home advises to keep chores and allowances totally separate. “Allowance is one thing. When it comes to chores, life skills, responsibilities-that’s a whole different thing.” says Walton.
Walton says, “When kids aren’t doing a chore, you don't say, ‘well, there goes your allowance.’ You’re going to sit them down and ask what’s going on. ‘We are a team. We are a family. We’ve got to have them done.’”
Besides, by paying children for chores with an allowance, you’ll also be sending the message that work isn't worth doing unless they’re getting paid for it.
There are times when it would make sense to pay kids for chores. Most financial and child-development experts agree that it’s a fine idea to pay children money for extra jobs that are outside their normal set of chores, such as washing windows, washing the car or helping to clean out the garage-especially if the child is saving for a big item. This may even develop an entrepreneurial (企业家的) spirit to think outside of the box to earn money.
For parents who are concerned that their children won’t learn the value of a dollar if the allowance isn’t tied to household chores, note that there are still plenty of money management skills to be learned from a straight allowance. Depending on the age, kids can be made responsible for paying for their own toys or snacks. Some parents even require that kids set aside a percentage of their allowance toward savings.
“I really like having my own money,” says Kevin, 9. “It’s up to me if I want to buy the cheap toy now, or save and get the better toy.” And that’s a good lesson to learn at 9 years old.
No matter which allowance route you take in parenthood, kids will feel empowered by being able to handle their own money.
Which of the following would Susie Walton most probably agree with?
A.A child’s allowance shouldn’t be tied to chores. |
B.Kids shouldn’t be forced to do chores. |
C.Doing chores teaches kids the value of work. |
D.Kids should be paid for doing chores. |
According to Susie Walton, if kids don’t do chores, parents should ________.
A.teach them the entrepreneurial spirit |
B.talk to them about family responsibilities. |
C.give them a smaller allowance than usual |
D.punish them by not giving them their allowances |
In Paragraph 6, “a straight allowance” probably means “________”.
A.money given by charity organizations |
B.money earned by doing part-time jobs. |
C.money earned by doing everyday household chores |
D.money given by parents and not dependent on chores |
What is the author’s attitude towards Kevin’s action?
A.Worried. | B.Doubtful. |
C.Approving. | D.Unfavorable. |
The text is mainly about _____________.
A.the importance of kids doing chores |
B.whether parents should pay kids for chores |
C.the advantages of kids handling their own money |
D.whether parents should give kids regular allowances |
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。
Training for a marathon requires careful preparation and steady,gradual increases in the length of the runs. ,buy the bestfitting,bestbuilt running shoes you can find. No one can say which brand will work best for you or feel best on your feet,so you have to rely on your experience and on the feel of each pair as you shop. When you have found shoes that seem right,walk in them for a few days to doublecheck the fit. .As always,you should stretch(伸展) at least ten minutes before each run to prevent injuries.
During the first week,do not think about distance,but run five minutes longer each day. ,it is wise to take a day off to rest. But during the next week,set a goal of at least a mile and a half per run. .After two weeks,start timing yourself. .Depending on the kind of race you plan to enter,you can set up a timetable for the remaining weeks before the race.
A.After six days |
B.For a good marathon runner |
C.Before you begin your training |
D.With each day,increase the distance by a half mile |
E.If they still feel good,you can begin running in them
F.Time spent for preparation raises the quality of training
G.Now you are ready to figure out a goal of improving distance and time
Einstein was born in 1879 in Germany. As a child, he was slow to learn to talk. As a pupil, he was backward. But when he was fourteen years old, he became clever. He taught himself maths from textbooks. He studied hard because he wanted to be a physicist.
In 1901, Einstein began teaching. In 1902 he continued his studies at the University of Zurich. Several years later, he formulated(系统地阐述)his famous Theory of Relativity(相对论).To most people the law of relativity is difficult to explain. But once Einstein explained it very well to a group of young students. He said, "When you sit with a good girl for two hours, you think it is only a minute. But when you sit on a hot stove for a minute, you think it's two hours. That is relativity."
After Hitler came into power in Germany, Einstein went to America. In 1940 Einstein became an American citizen. In 1955, Einstein's life ended at the age of seventy-six.
When Einstein was a pupil of twelve, he _______ .
A.was not quick in learning to talk |
B.studied very hard |
C.was poor in his studies |
D.hardly lagged behind |
The law of relativity is_______ .
A.very hard for most people to understand |
B.too hard for Einstein himself to explain |
C.too hard to explain to anybody except Einstein |
D.easy to understand only for the young students |
When did Einstein become an American citizen?
A.He was an American citizen until 1940. |
B.He became an American citizen in the year when Hitler came into power. |
C.He did not become an American citizen until 1955. |
D.Not until he had reached the age of 61 did he become an American citizen. |
Which of the following do you think is true?
A.The Germans owed their scientific progress to Einstein. |
B.Einstein made a very great contribution to modern science. |
C.Einstein owed a great deal to the modern world. |
D.The Americans owed all their economic development to Einstein. |
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多选项。
Have you ever felt a sudden feeling of joy because you heard a favorite song playing? Then you know that music can have a strong effect (影响) on your emotions. It can help get you out of a bad mood (心情) or stay in a good one, says Alicia Ann Clair, professor at the University of Kansas.
To cheer up, listen to Latin music or anything with a strong beat or a fast speed When you want to relax after a busy day, music with a slower speed can calm you down.
Listen to calming music before you start any stressful activities, advises Dr. Clair. "Once you' re in a good state of mind, it' s easier to keep it." You can lower stress at work with music, too, by playing relaxing tunes (曲调). "If you listen to them all day long, you' ll stop noticing them," Dr. Clair explains. Then the music won' t have any effect.
"To feel energetic, start with something relaxing, and then gradually increase the speed and beat," says Dr. Clair. For example, first play some nice slow love songs, and then listen to something more energetic. When you want to calm down after a busy week at work, just do the opposite.
A.Music can also help you relax and feel active. |
B.Try to take advantage of this power of music. |
C.But only play them when you really need them. |
D.Loud and fast music can fill you with energy. |
E. There are different kinds of music around the world.
F. Put on your favorite song, but only if it is one that can lift your spirits.
G. You can change your mood by changing from one kind of music to another.
Richie Kraus thinks all kids should receive birthday presents. And he's willing to give up his own presents to make that happen.
When Richie was six, he helped collect holiday gifts for children whose families couldn't afford presents. He started thinking about how much he liked getting presents on his birthday. He asked his mom, "If we get kids presents during the holidays, who gets them presents on their birthdays?"
Richie wanted to raise money for those birthday presents. So his mom helped him create the 2U Fund. The name 2U came from the well-known song "Happy Birthday to You."
Richie explains how the fund works: "On our birthdays, we ask our friends to make a donation instead of giving us presents." Richie attaches a special sticker to his party invitations. The sticker tells about the 2U Fund and invites guests to participate, Richie and his mom then give the money to a local charity that has agreed to partner with them. The people at the charity make sure the donations go toward birthday presents for kids in need.
Richie has had three 2U parties. "It just feels really, really good to help other kids," he says.
Richie has encouraged others to try giving up some of their birthday presents to help others. His younger brother, Max, had a 2U party. Some of Richie's friends did, too. He also spoke about the idea at a summer camp and at a school assembly (集会). "There were close to 200 students and teachers in the assembly," Richie' s teacher, Janel McCormick, says. "They all wanted to help support 2U."
Since Richie and his family started the 2U Fund, dozens of kids have helped raise more than $7,000. That money has bought dolls, books, and many other birthday toys for kids in need.
Before Richie created the 2U Fund, he .
A.had very few friends |
B.had done some charity work |
C.had seldom received birthday presents |
D.had already donated some birthday presents |
To help kids in need, Richie' s 2U parties mainly .
A.hold birthday parties for them |
B.invite them to attend the parties |
C.prepare birthday presents for them |
D.raise money for their birthday presents |
What can we learn from the last two paragraphs?
A.All of Richie' s schoolmates plan to hold 2U parties. |
B.Richie is praised for his kindness. |
C.Richie' s acts of kindness have spread. |
D.Richie has made more friends. |
A supermarket checkout operator was praised for striking a blow for modern manners and a return to the age of politeness after refusing to serve a shopper who was talking on her mobile phone.
The supermarket manager was forced to apologize to the customer who complained she was told her goods would not be scanned unless she hung up her phone. Jo Clark, 46, said, “I don't know what she was playing at. I couldn’t believe how rude she was. When did she have the right to give me a lecture on checkout manners? I won’t be shopping there again!”
But users of social media sites and Internet forums(论坛) were very angry that store gave in and the public appeared to be supporting the angry checkout worker. “Perhaps this is a turning point for mobile phone users everywhere. When chatting, keep your eyes on people around you. That includes people trying to serve you, other road users and especially people behind you in the stairs,” said a typical post.
“It’s time checkout staff fought back against these people constantly chatting on their phones. They can drive anyone crazy. It’s rude and annoying. I often want to grab someone’s phone and throw it as far as I can, even though I am not a checkout girl, just a passer-by,” said another.
Siobhan Freegard, founder of parenting site www. Netmums.com said, “While this checkout operator doesn’t have the authority to order customers to switch off their phones, you can see clearly how frustrated and angry she felt. No matter how busy you are, life is nicer when you and those around you have good manners.”
According to Jo Clark, the checkout operator_____________.
A.lacked the knowledge of checkout manners |
B.played with a mobile phone while at work |
C.had no right to forbid her from using her mobile phone |
D.deserved praise for her modern manners |
The third and fourth paragraphs imply that the public_________.
A.are used to chatting on their mobile phones |
B.are driven crazy by constant mobile calls |
C.ignore the existence of mobile phone users |
D.seem to support the checkout operator |
The attitude of Siobhan Freegard towards the checkout operator was________.
A.disapproving | B.supportive |
C.neutral(中立的) | D.indifferent |
The passage is mainly about _________.
A.whether we should talk on our phones while being served |
B.why we can talk on mobile phones while shopping |
C.what good manners checkout operators should have |
D.how we can develop good manners for mobile phone users |
Charlie Vansant, a college student of Athens, Ohio, who reported that his car was stolen, got a surprise when he learned a woman had mistaken it for her daughter’s car and taken it— using her key.
Kate Anderson became an accidental car thief when picking up her daughter’s car near an Ohio University building last week. Anderson spotted the Toyota Camry(丰田凯美瑞)and used her daughter’s key to unlock the car, start the engine and drive home — without realizing that the car wasn't her daughter’s.
When Charlie Vansant left class a short time later, he found only an empty parking spot. He first assumed the car had been towed, but when the police couldn’t find a record of it, they took a theft report.
The morning after Anderson took the car, her daughter discovered the Camry in the driveway wasn’t hers. Anderson said she was able to find Vansant’s name on paperwork in the glove compartment and look up his phone number on the website for the university.
When Anderson told Charlie the car was in her driveway, “It sounded really suspicious(可疑的)at first, as she wanted to hold the thing for ransom (赎金) , ” said Vansant. He eventually went to the house with a police officer, where he was reunited with his car. According to the police report, the case was closed “because of mistaken car identity”, and Anderson wasn’t charged.
Vansant seemed to blame the car company more than the “thief”. “Her key fit not only my lock, but my ignition(点火装置)as well — so high-five for Toyota, I guess.” he said.
What does the underlined word “towed” mean in paragraph 3?
A.sold. | B.damaged. | C.stolen. | D.remove. |
Which of the following is NOT true according to the passage?
A.Mrs. Anderson’s daughter discovered the car her mother drove was not hers. |
B.Charlie had thought he had to give Anderson money to get his car back. |
C.Mrs. Anderson stole Charlie’s car at the request of her daughter. |
D.Mrs. Anderson used her daughter’s key to unlock Charlie’s car and drive home. |
What does Charlie mean by “high-five for Toyota”?
A.He should thank Toyota for returning his car. |
B.He is blaming Toyota for the poor quality of car keys. |
C.He wants to celebrate with Toyota for getting his car back. |
D.He thinks highly of Toyota for producing large quantities of cars. |
What is likely to happen next according to the passage?
A.Mrs. Anderson was charged with stealing a car. |
B.Charlie blamed Mrs. Anderson for mistakenly taking his car. |
C.Charlie would ask the Toyota Company to give him an explanation. |
D.The Toyota Company would give Charlie a new car as compensation(补偿). |
2016 International Summer School
The 2016 University of Cambridge International Summer Schools will run in Cambridge from 6 July to 22 August 2016. Our programs give you the opportunity to meet award-winning lecturers, stay and dine in one of the historic Cambridge Colleges and enjoy a range of weekend excursions(游览)and social activities. To sign up for a program simply apply online, or download an application form from our website. Places on courses and in-college accommodation are limited, so we encourage applicants to apply early to avoid disappointment.
This year we will be offering specialist programs in: Ancient Empires, Literature, History, Medieval Studies and new for 2016, Creative Writing and Hanseatic League. If you are looking to study a number of different subject areas, the Interdisciplinary Summer School is ideal. It is divided into three terms, Interdisciplinary Summer School Term I, Interdisciplinary Summer School Term II and Interdisciplinary Summer School Term III, covering a wide range of subjects including politics, philosophy, economics, literature, history and international relations. You can opt to do one or two terms. But most students choose all the three terms.
The Cambridge English for Academic Purposes program combines a two-week intensive(强化)language course with a two-week academic program. This allows students to put into practice the language skills they have learned during the first two weeks of the program. Applicants will also have the opportunity to sign up for weekend excursions and take part in various events.
If you want to join us in 2016, please click here to download a copy of brochure(手册). If you want to find out more information about 2016 International Summer School, you can visit www.ice.cam.ac.uk/intsummer. (CLICK HERE)
What our students say
“The entire experience was even better than I expected. I absolutely loved it.” Sally, USA
“I believe that the Science International Summer School was a fulfilling experience. I think that everyone should attend this Summer School at least once in a lifetime.” Dominika, Poland
What should people do if they want to sign up for a program in this ad?
A.They should go to Cambridge by plane. |
B.They should phone Cambridge. |
C.They should call for an application form. |
D.They should apply for the program online. |
Why are the applicants encouraged to apply early?
A.The earlier they apply, the less they will pay. |
B.If they apply late, they have to live out of Cambridge College. |
C.There are not enough places for the courses or in-college accommodation. |
D.The reason is not mentioned in the passage. |
What’s the meaning of the underlined word in Paragraph 3?
A.To avoid doing a duty |
B.To choose to do |
C.To decide not to be part of a group |
D.To decide on |
试题篮
()