2.chalk A.all B.although C.always D.salt 查看更多

 

题目列表(包括答案和解析)

 

    Thirteen vehicles lined up last March to race across the Mojave Desert, seeking a million in prize money. To win, they had to finish the 142-mile race in less than 10 hours. Teams and watchers knew there might be no winner at all, because these vehicles were missing a key part-drivers.

    DARPA, the Defense Advanced Research Projects Agency, organized the race as part of a push to develop robotic vehicles for future battlefields. But the Grand Challenge, as it was called, just proved how difficult it is to get a car to speed across an unfamiliar desert without human guidance. One had its brake lock up in the starting area. Another began by throwing itself onto a wall. Another got tied up by bushes near the road after 1.9 miles.

    One turned upside down. One took off in entirely the wrong direction and had to be disabled by remote (远程的) control. One went a little more than a mile and rushed into a fence;

    Another managed to go for six miles but stuck on a rock. The “winner,” if there was any, reached 7.8 miles before it ran into a long, narrow hole, and the front wheels caught on fire.

    “You get a lot of respect for natural abilities of the living thing,” says Reinhold Behringer, who helped design two of the car-size vehicles for a company called Sci-Autonics. “Even ants (蚂蚁) can do all these tasks effortlessly. It’s very hard for us to put these abilities into our machines.”

    The robotic vehicles, though with necessary modern equipment such as advanced computers and GPS guidance, had trouble figuring out fast enough the blocks ahead that a two-year-old human recognizes immediately. Sure, that very young child, who has just only learned to walk, may not think to wipe apple juice off her face, but she already knows that when there’s a cookie in the kitchen she has to climb up the table, and that when she gets to the cookie it will taste gook. She is more advanced, even months old, than any machine humans have designed.

1.Watchers doubted if any of the vehicles could finish the race because ______.

    A. they did not have any human guidance.

    B. the road was not familiar to the drivers.

    C. the distance was too long for the vehicles

    D. the prize money was unattractive to the drivers.

2.DARPA organized the race in order to _______.

   A. raise money for producing more robotic vehicles

   B. push the development of vehicle industry

   C. train more people to drive in the desert

   D. improve the vehicles for future wars

3.From the passage we know “robotic vehicles” are a kind of machines that_______.

   A. can do effortlessly whatever tasks living things can

   B. can take part in a race across 142 miles with a time limit

   C. can show off their ability to turn themselves upside down

   D. can move from place to place without being driven by human beings

4.In the race, the greatest distance one robotic vehicle covered was ______.

   A. about eight miles

   B. six miles

   C. almost two miles

   D. about one mile

5.In the last paragraph, the writer implies that there is long way to go ______.

   A. for a robotic vehicle to finish a 142-mile race without any difficulties

   B. for a little child who has just learned to walk to reach the cookie on the table

   C. for a robotic vehicle to deal with a simple problem that a little child can solve

   D. for a little child to understand the importance of wiping apple juice off its face

 

查看答案和解析>>

Miss Gogers taught physics in a New York school. Last month she explained to one of her classes about sound, and she decided to test them to see how successful she had been in her explanation. She said to them,“Now I have a brother in Los Angeles. If I was calling him on the phone and at the same time you were 75 feet away, listening to me from across the street, which of you would hear what I said earlier, my brother or you and for what reason?”

 Tom at once answered,“Your brother. Because electricity travaels faster than sound waves.”“That’s every good,”Miss Gogers answered; but then one of the girls raised her hand, and Miss Gogers said.“Yes, Kate.”

 “I disagree,”Kate said.“Your brother would hear you earlier because when it’s 11 o’clock here it’s only 8 o’clock in Los Angeles.”

1.Miss Gogers was teaching her class_________.

A.how to telephone      B.about electricity   C.about time zone    D.about sound

2.Miss Gogers raised this question because she wanted to know whether______.

 A.it was easy to phone to Los Angeles

 B.her student could hear her from 75 feet away

 C.her students had a good command of her lesson about sound

 D.sound waves were slower than electricity

3.Tom thought that electricity was _________.

 A.slower than sound waves    B.faster than sound waves

 C.not so fast as sound waves   D.as fast as sound waves

4.Kate thought Tom was wrong because _______.

 A.clocks in Los Angeles showed a different time from those in New York

 B.electricity was slower than sound waves

 C.Tom was not good at physics at all

 D.Tom’s answer had nothing to do with sound waves

5.Whose answer do you think is correct according to the law of physics?

 A. Tom’s        B. Kate’s   C. Bath A and B   D. Neither A nor B

 

查看答案和解析>>


You can love them or hate them, but no matter which tourist destination you visit, chances are that you’ll see someone with their head buried in a Lonely Planet guidebook.
Lonely Planet is one of the world’s largest travel guide brands, publishing more than 500 different guides in eight languages. The popular brand also produces television shows, websites and podcasts(播客)all devoted to travel.
Some people praise Lonely Planet books because they make traveling easy and affordable. They also save time and make sure you don’t miss the best things.
They also provide the reviews of hostels(旅店), hotels, restaurants and ticket information about your destination.
This can be great if you’re a nervous traveler, or if you haven’t traveled by yourself before. If you’re in a country where you don’t speak the language, sometimes there’s nothing better than getting into a taxi and opening up a guidebook. You simply point to a map that directs the taxi driver to a hostel that’s cheap and clean, with friendly staff and cold beer.
But others criticize Lonely Planet and other travel guide publishers like them. They say guidebooks take the fun and spontaneity(自发性)out of traveling, and that part of the enjoyment of travel comes from the fact that anything can happen. They also regret that if you follow a guidebook, you’ll end up doing the same thing and having the same experience as everyone else. You might end up seeing the same group of people over and over, because everyone is reading the same book and following the same route.
Another criticism of travel guides is that they have a large impact on local communities. For example, some locals devote their lives to behaving in ways that attract tourists. They pretend to live a traditional lifestyle, wear traditional clothes and live in traditional houses in order to attract the tourist dollar.
63. The Lonely Planet guidebook can bring you the following advantages EXCEPT that __________.
A. you can speak a foreign language when opening a guidebook
B. you can easily find a nice place to stay in a strange city
C. it provides lots of useful information about your destination
D. it can help you save time and money when traveling
64. People criticize the guidebook because __________.
A. it is not as useful as most travelers expect
B. tourist destinations will be crowded if everyone follows the same route
C. travelers may not get the chance to have unexpected adventures
D. local people keep modern lifestyles under its influence
65. What do we know about the Lonely Planet guidebook from the text?
A. It’s a world-famous brand only producing guidebooks for travelers.
B. It’s very useful to a person who’s nervous about touring an unfamiliar place.
C. It’s very useful to a tourist who likes to repeat others’ experiences.
D. It is loved by all travelers because of the convenience it brings to travelers.
66. Which of the following best shows the structure of the text? (①—⑦ stand for Paragraph 1
—Paragraph 7 )
A.   ①            B.  ①                C. ①                D. ①
②                 ②③  ④                ②                ②   ③
③④   ⑤⑥⑦         ⑤        ⑥⑦        ③④⑤  ⑥⑦       ④⑤      ⑥⑦

查看答案和解析>>

完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)出可以填入空白的最佳选项,并在答题卡上将该项涂黑。

It is not polite to arrive at a dinner party more than 15 to 20 minutes late. The host or hostess usually waits for all the guests to arrive before __21__ the meal. If someone is late, the food may be spoiled, and so might the host or hostess’s __22__. If you have to be late, call and tell them to __23__ you.

It’s even __24__to be early! The host or hostess will probably not be__25__. If you are early, drive or walk around the block a few times, or just sit in your car __26__the right time.

Though it is often important to arrive on time, yet__27__, for open houses, the host or hostess invites guests to arrive and leave __28__a certain time. You can arrive at any time __29__the time he or she gives you.

It’s polite to bring an empty stomach, but it’s even nicer to bring a small present. The present should not cost__30__, or you might embarrass the host or hostess. Flowers, wine, or a box of candy will __31__. Never bring money as a present.

In an introduction, the order of a name: (1) the given name, (2) the family name. In other words the given name comes __32__. It’s important not only to learn and remember names, but to__33__them often in conversation. After the __34__we usually call friends by their given names. __35__may want you to call them by their titles and__36__, such as “Mr. Jones” “Mrs. Johnson” or “Dr. Brown”.

A maiden name is a woman’s family name __37__. In the United States and Canada, after a woman marries, she __38__the family name of her husband__39__her maiden name. It is now becoming __40__, however, for women to keep their maiden names after getting married.

21. A. making                              B. serving                            C. doing                               D. cooling

22. A. soul                                    B. spirits                              C. thought                           D. idea

23. A. have with                    B. have without                 C. start with                 D. start without

24. A. nice                              B. nicer                       C. worse                        D. bad

25. A. back                            B. in                             C. up                               D. ready

26. A. until                                    B. after                                C. before                          D. by

27. A. in the other hand  B. on the other hand        C. in another hand   D. on another hand

28. A. between                     B. among                   C. for                                    D. at

29. A. within                                B. by                                     C. on                                     D. in

30. A. many                                  B. a little                              C. a lot                                 D. a few

31. A. be well                               B. be right                           C. do well                            D. do fine

32. A. after                                   B. before                             C. first                                  D. later

33. A. recall                                  B. respect                           C. speak                             D. retell

34. A. meeting                            B. conversation              C. introduction                   D. dinner

35. A. Older people                   B. Young people                 C. Gentlemen                   D. Doctors

36. A. given names                    B. first names                   C. family names                 D. nick names

37. A. on birth                    B. from birth            C. with birth                 D. at birth

38. A. gives                                  B. brings                        C. carries                   D. takes

39. A. instead                              B. in place of                       C. takes place                   D. in place

40. A. important                         B. necessary                       C. special                   D. common

 

查看答案和解析>>

In Canada you can find dogs, cats, horses, etc. in almost every family. These are their pets. People love these pets and have them as their good friends. Before they keep them in their houses, they take them to animal hospitals to give them injections(注射)so that they won't carry disease. They have special animal food stores, though they can get animal food in almost every kind of store. Some people spend around two hundred Canadian dollars a month on animal food. When you visit people's houses, they would be very glad to show you their pets and they are very proud of them. You will also find that almost every family has a feeding place for birds in their garden. All kinds of birds are welcomed to come and have a good meal. They are free to come and go and nobody is allowed to kill any animal in Canada. They have a law against killing wild animals. If you killed an animal, you would be punished. If an animal happened to get run over by a car, people would be very sad about it.

People in Canada have many reasons to like animals. One of them might be that their family ties are not as close as ours. When children grow up, they leave their parents and start their own life. Then the old will feel lonely, but pets can solve this problem. They can be good friends and never leave them alone.

1.The passage mainly talks about____ .

 A. how to keep disease from pets           B. pets in Canada

 C. how to take good care of pets            D. life of the old in Canada

2.They give their pets injections before keeping them at their houses  because ____.

 A. the pets are sick                      

B. the pets are wild

 C. they want to stop them from getting sick

 D. they want them to sleep on the way home

3.In Canada, children leave their parents when they grow up because ____.

A. they don't love their parents any more

B. they can only find jobs far from their parents

C. their parents houses are too small

D. they wouldn't depend on their parents any more

4.Which of the following is TRUE?

A. People buy animal food only at the animal food stores.

B. Pets eat better than people.

C. Almost every family has a birdcage in his house.

D. Any bird can come to the bird feeders to eat

5.From the passage we know that Canadians_____

A.love animals           B.don't like animals  

C.often kill animals           D.often keep their pets outside their house

 

查看答案和解析>>


同步练习册答案