单选题A young child ______ he is, he can speak three foreign languages.

单选题Co-operation means working together for the benefit of all. Without co-operation modern society could not exist. Co-operation has been at its best among the farmers in the dry areas of certain parts of Australia and Africa. The fields have been irrigated in these areas. Crops cannot be grown without water. For this purpose, canals and reservoirs have been built. The canals have been cut through the fields of not only one farmer. Those who live higher up the valley than the others have permitted canals to be built through their land in order to carry water to the fields of farmers lower down. When there is a long period without rain, all share the water. Instead of taking all the water for them selves, the farmers in the higher land leave enough water for their neighbours down the valley. Farming in the dry areas has been made possible by such co-operation. By co-operation farmers have learned to make even the desert produce crops.

单选题[此试题无题干]

单选题 Studies over the past decade at the University of Utah show that hands-free cellphones are just as harmful to drivers as hand-held ones because it is the conversation, not the phone, that is distracting(分散) their attention. "Even though your eyes are looking fight at something, when you are on the cellphone, you are not as likely to see it," says Professor David Strayer. "Ninety-nine percent of the time, it's not that critical(危急的), but that 1% could be the time a child runs into the street," he adds. Dr. Strayer's studies have also found that talking on a cellphone is far more distracting than talking with a passenger. Listening to the radio, to music or to a book on tape also isn't as distracting, because it doesn't require the same level of interaction as a conversation. But even drivers may miss some details of a book on tape if their attention is focused on driving tasks. Some people can train themselves to pay extra attention to things that are important—like police officers learn to search faces in crowds. And the Utah researchers have found a rare group of "super-taskers"—about 2.5% of the population—who seem able to attend to more than one thing with ease. Many more people think they can effectively do several things at the same time, but they are really turning their attention rapidly between two things and not getting the full effect of either. Clearly, it is easier to put some tasks together than others. "Not all distractions are the same," says Dr. Strayer. Things like cleaning and working out can be done automatically(自动地) while the mind is focused elsewhere. But doing homework and texting at the same time isn't possible. Even talking and watching TV is difficult. "Just try talking with your wife while watching football. It's impossible," jokes Dr. Strayer.

单选题It can be inferred from the passage that if a child is given an allowance, he or she may ______.

单选题Wheredoesthemangethisjob?A.Atarestaurant.B.Atacompany.C.Atahotel.

单选题______ the way, I want to buy some juice too. [A] On [B] In [C] By

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单选题{{B}}Text 5{{/B}} The air surrounding us is important to everyone. Without air, we could not exist. Everyone understands that. But air is necessary in many other ways — ways that are not always so obvious or widely known. If we did not have air, there would be no sound. Sound travels through air. Where there is no air, there is no sound. Without air there would be no fire. There would be no automobiles, since motors need air in order to operate. Without air, there would be no wind or clouds. The night time would be very cold and the days very hot. We would be forced to seek shelter from the sun, as there would be no atmosphere to protect us from the sun's deadly rays. In this huge ocean of air surrounding the earth, there is more energy than in all the coal, oil and gas we have on the earth. Electrical energy is collected in the atmosphere as water is collected and stored in a dam (大坝). The existence of electricity in the air has been known for centuries. Men have gazed in wonder at the bright patterns of lightening in storm clouds. But thorough (彻底的，深入的) study of electricity in the air was not possible until the development of radio.

单选题Wheredoestheconversationprobablytakeplace?

单选题I can think of many cases ______ students obviously knew a lot of English words and expressions but couldn't write a good composition.

单选题WASHINGTON -- considering the serious warnings lately about Internet viruses(病毒), users may don't use their machines just to keep them safe. In reality, common sense and a few basic tips can keep Internet surfers secure. Anti-virus software is a must, and it should be updated at least once a week to recognize newly viruses. If this is not done, you will meet great troubles. People with broadband Internet connections should have also a firewall. These protect the computer from attacks by hackers(黑客). Then it is time to think about computer habits. Unlike old viruses, which spread only through shared disks, the Internet brings viruses straight to the e-mail box. ff an e-mail with attachment(附件) comes from an unknown sender, or unexpectedly from a known' sender, it should not be opened. On receiving an unexpected attachment from a friend, experts suggest a telephone call to make sure of the mail' s source before opening. If you open the mail without any consideration, you will be easily attacked by the hackers.

单选题What does the speaker want to tell his listeners?

单选题Parents often believe that they have a good relationship with their teenagers (青少年). But last summer, Joanna and Henry noticed a change in their older son: suddenly he seemed to be talking far more to his friends than to his parents. "The door to his room is always shut." Joanns noted. Tina and Mark noticed similar changes in their 14-year-old daughter. "She used to cuddle up (蜷伏) with me on the sofa and talk," said Mark. "Now we joke that she does this only when she wants something, Sometimes she wants to be treated like a little girl and sometimes like a young lady. The problem is figuring out which time is which." Before age 11, children like to tell their parents what's on their minds. "In fact, parents are first on the list." said Michael Riera, author of Uncommon Sense for Parents with Teenagers. "This completely changes during the teen years." Riera explained. "They talk to their friends first, then maybe their teachers, and their parents last." Parents who know what's going on in their teenagers' byes are in the best position to help them. To break down the wall of silence, parents should crate chances to understand what their children want to say, and try to find ways to talk and write to them. And they must give their children a mental break, for children also need freedom, though young. Another thing parents should remember is that to be a friend, not a manager, with their children is a better way to know them.

单选题The second paragraph is mainly concerned with ____________.

单选题听第6段对话，回答第6～7题。