单选题Last year ______ of new books were published on environmental protection.

单选题It is (about time) that we (go to supper), (for) we still have a meeting (to attend) this evening.

单选题______ many people prefer coffee, he drinks tea as usual.

单选题Every field of chemistry ______ different chemical reactions. A. holds B. consists C. composes D. involves

单选题Certain drugs can prevent transmission of the ______ from a pregnant mother to her child. A. vegetation B. virus C. poison D. cell

单选题They will go home for winter vacation as soon as they ______ their exams.

单选题Would you mind me to open the window? A. Would B. mind C. to open D. the

单选题Please give his decision plenty of ______ before you accept it.

单选题A man is reported in the local newspaper _____ by three youths as he walked home from work yesterday

单选题 Directions: There are 20 blanks in the following passage, and for each blank there are 4 choices marked A, B, C and D at the end of the passage. You should choose ONE answer that best fits into the passage. Then blacken the corresponding letter on the Answer Sheet. The mysterious tiger has been a symbol of power and strength for centuries. Its power is a {{U}}(56) {{/U}} to hunters, {{U}}(57) {{/U}} have tried to kill it to prove their own skill and {{U}}(58) {{/U}}. In India {{U}}(59) {{/U}} the nineteenth and early twentieth centuries, large parties of {{U}}(60) {{/U}} from around the world {{U}}(61) {{/U}} go out on huge tiger hunts. Hundreds of tigers could be killed in a few weeks. As a {{U}}(62) {{/U}} of this over-hunting, {{U}}(63) {{/U}} with loss of habitat(栖息地), the population of tigers in India dropped from about 40,000 {{U}}(64) {{/U}} the turn of the twentieth century to about 2,000 by 1972. With the help of India and other concerned countries, the World Wildlife Fund {{U}}(65) {{/U}} Operation Tiger in 1972 to save the tiger {{U}}(66) {{/U}} dying out. Since then, seventeen tiger preserves (保护区) have been {{U}}(67) {{/U}}, and the tiger population in India has risen to {{U}}(68) {{/U}} 4,000 and 5,000. But when people live on the {{U}}(69) {{/U}} of the tiger preserves, tigers sometimes kill their farm animals and attack people--about 600 people in India have been killed by tigers in the last dozen years. {{U}}(70) {{/U}} tigers do not eat humans. But "old, wounded and homeless" tigers can become habitual (习惯的) man-eaters. In one area in India, villagers have {{U}}(71) {{/U}} a clever solution. They wire lifelike human dummies (假人) to electricity {{U}}(72) {{/U}} the tigers get a(n) {{U}}(73) {{/U}} shock when they attack. It is hoped that in this way tigers will learn to {{U}}(74) {{/U}} people. But the conflict between human and tiger {{U}}(75) {{/U}}. Only if people have enough food, shelter and fuel will the tiger survive in the long run. And only if the tiger and its forest survive will people have a natural world they can return to.

单选题The Internet has brought ______ big changes in the way we work.

单选题When we finally managed to get home after the tiring long journey, we could not hardly move a step further. A. to get home B. tiring C. not hardly D. further

单选题—What was it that caused the party to be put off? —______the invitations.

单选题On the end of his nose was a ______ of thick glasses.

单选题You’d better have the pipe checked today. It has kept _____ for three days.

单选题Ashley is very showy and she always wants to be the _____ of attention in public.

单选题In the United States elementary education begins at the age of six. At this stage nearly all the teachers are women, mostly married. The atmosphere is usually very friendly, and the teachers have now accepted the idea that the important thing is to make the children happy and interested. The old authoritarian (要绝对服从的) methods of education were discredited (不被认可) rather a long time ago-so much so that many people now think that they have gone too far in the direction of trying to make children happy and interested rather than giving them actual instruction. The social education of young children tries to make them accept the idea that human beings in a Society need to work together for their common good. So the emphasis is on cooperation rather than competition throughout most of this process. This may seem curious, in view of the fact that American society is highly competitive; however, the need for making people sociable in this sense has come to be regarded as one of the functions of education. Most Americans do grow up with competitive ideas, and obviously quite a few as criminals, but it is not fair to say that the educational system fails. It probably does succeed in making most people sociable and ready to help one another both in material ways and through kindness and friendliness.

单选题He claims he is ______ of the fact that the company is deep in debt.

单选题It suddenly______to me that we could use a computer to do the job.A. happenedB. occurredC. agreedD. presented