单选题Dolphins (海豚) live their whole lives in water. But they are mamma& (哺乳动物J) that live in water. That" s why a dolphin comes to the top of the water so often. A dolphin" s nose isn" t easy to see. It" s just a tiny hole on top of the dolphin" s head. This hole is called a blowhole. A dolphin comes up every half minute or so to breathe. It opens its blowhole and takes in air. Then it closes its blowhole tight and dives into the water again. But a dolphin can stay under the water for six or seven minutes if it has to. It holds its breath. A dolphin hears with two ears. It hears all sorts of small noises under water. It hears small stones rolling. It can hear sounds fish and other dolphins make. A dolphin"s ears may be extra small, but its mouth is extra big. It has to be big. It holds almost one hundred teeth. These teeth are all the same shape and size. They are used for catching food, but not for chewing (咀嚼) it. A dolphin opens its big mouth. It seizes (抓住) a fish firmly between its two rows of teeth. Then it swallows (吞下) the whole fish. A dolphin swims very fast. It is said that a dolphin swims faster than anything else in the water. So engineers are studying its skin and shape. They are learning ways to make boats go faster through the water. It is well known that dolphins are very smart. Some scientists say they are smarter than dogs. Others say they are smarter than apes (类人猿).

单选题Tourists can get the latest information of our city ______ the help of our local tour guides.

单选题Strange enough they moved to this town three years ago to the day．

单选题Praise is like warm sunlight, which will not only bring joy to those who are praised but also add more pleasure to those who praise. A. 歌颂像阳光，阳光不但给歌颂人带来快乐，而且给赞美者带来快乐。 B. 赞美像温暖的阳光，不仅给被表扬者带来高兴，也会给表扬者带来快乐。 C. 赞扬犹如温暖的阳光，它不仅会给被赞扬者带来快乐，也会给赞扬者带来更多的愉快。 D. 表扬像温暖的阳光一样，不但给被表扬的人带来快乐，也会给表扬者带来更多的幸福。

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单选题The classroom needs______． A.clean B.to clean C.to be cleaned D.being cleaned

单选题What makes one person more intelligent than another? What makes one person a genius, like the brilliant Albert Einstein, and another person a fool? Are people born intelligent or stupid, or is intelligence the result of where and how you liver? These are very old questions and the answers to them are still not clear. We know, however, that just being born with a good mind is not. enough. In some ways, the mind is like a leg or an am muscle. It needs exercise. Mental (done with the mind) exercise is particularly important for young children. Many child psychologists (心理学家) think that parents should play with their children more often and give them problems to think about. The children are then more likely to grow up bright and intelligent. If, on the ether hand, children are left alone a great deal with nothing to do, they are more likely to become dull and unintelligent. Parents should also be careful with what they say to young children. According to some psychologists, if parents are always telling a child that be or she is a fool or an idiot, then the child is more likely to keep doing silly and foolish things. So it is probably better for parents to say very positive (helpful) things to their children, such as "That was a very clever thing you did." or "You are such a smart child."

单选题The children______ forward to this holiday for months. A. have looked B. had looked C. are looking D. have been looking

单选题Over the last two decades，a new trend in American education has developed．

单选题Tom won a prize for good ______ at school.A. behaviorB. actionC. actD. acting

单选题A.That'sawonderfulidea.B.Wemaygoout.C.Picnicisinteresting.D.Idon'tthinkso.

单选题Many a student and teacher ______ making a careful study of ______ own problems.

单选题I just can"t understand ______ at him. He is only eleven!

单选题I suppose you' re not going out today, ______?A. are youB.. do youC. aren't youD. don' t you

单选题As Edison grew _______, he never lost his interest in science.

单选题When you come tomorrow afternoon, I ______ the designing of your new house. A. will" finish B. shall finish C. shall have finished D. have finished

单选题{{B}}Task 2{{/B}}This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 to 45. You have probably seen ads in newspaper or on television for mail-order companies. Perhaps a catalogue has been sent to you. Why do people buy things they have not seen in person? Some people believe that things can be bought more cheaply by mail. Another good thing about buying by mail is that it is easier and more enjoyable to sit at home and work through a catalogue than to shop around the stores. With a catalogue from a large company, you have your own shop window for almost everything you want to buy. Buying from a catalogue is so easy. It saves the shopper time and trouble. Sometimes, it saves the shopper money, too. But people often buy more than they can really afford or need, because many things look so good to them They can probably pay a certain part of the full price-a down payment. Then they pay a certain amount of money every month until the goods is paid for in full. But by then they often find what they have bought are of no use at all.

单选题He will surely finish the job on time ______ he's left to do it in his own way. A. in case B. so long as C. as far as D. in that

单选题I heard some very ______ news this morning.

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