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1、情态动词表推测专项练习1. Look! The light is out in her room. She to bed already. A. must go B. had to go C.must have gone D.has gone 2. We had a wonderful time yesterday. You .Why didnt you come? A. had to come B.should have come C.might have come D.must have come 3. There were already five people in the car b
2、ut they managed to take me as well. It_ a comfortable journey. A. cant be B. shouldnt be C. mustnt have been D. couldnt have been 4. My sister met him at the Grand Theatre yesterday afternoon, so he _ your lecture. A. couldnt have attended B. neednt have attended C. mustnt have attended D. shouldnt
3、have attended 5. I was really anxious about you. You _ home without a word. A. mustnt leave B. Shouldnt have left C. Couldnt have left D. neednt leave 6. Oh, Im not feeling well in the stomach,I_ so much fried chicken just now. A. shouldnt cut B. mustnt have eaten C. shouldnt have eaten D. mustnt ea
4、t 7. Mr.White _ at 8:30 for the meeting, but he didnt show up. A. should have arrived B. should arrive C. should have had arrived D. should be arriving 8. You _ be tired - youve only been working for an hour. A. must not B. won t C. can t D. may not 9. - Isn t that Anns husband over there? - No, it
5、_ be him -Im sure he doesnt wear glasses. A. cant B. must not C. wont D. may not 10. There _ be any difficulty about passing the road test since you have practised a lot in the driving school. A . mustnt B. shant C. shouldnt D.neednt 11. I was on the highway when this car went past followed by a pol
6、ice car. They _ at lease 150 km an hour. A. should have been doing B. must have been doing C. could have done D. would have done 12. He _ have completed his work; otherwise, he wouldnt be enjoying himself by the seaside. A. should B. must C. wouldnt D. cant 13. - The woman biologist stayed in Africa
7、 studying wild animals for 13 years before she returned.- Oh, dear! She _ a lot of difficulties! A. may go through B. might go through C. ought to have gone through D. must have gone through 14. This cake is very sweet. You _ a lot of sugar in it. Ashould put Bcould have put Cmight put Dmust have pu
8、t 15. Catherine, I have cleaned the room for you.Thanks. You it. I could manage it myself. Aneednt do Bneednt have done Cmustnt do Dshouldnt have done 16.Tom is never late for work. Why is he absent today? Something _ to him. Amust happen Bshould have happened Ccould have happened Dmust have happene
9、dThe Uniqueness of Finger-prints （指纹的唯一性）难度： 词数：266 标准时间：6 分钟 完成时间：_ 正确数：_Every human being has a unique arrangement of the skin on his fingers and this arrangement is unchangeable. Scientists and experts have proved the uniqueness of finger-prints and discovered that no exactly similar pattern is p
10、assed on from parents to children, though nobody knows why this is the case. The ridge structure on a persons fingers does not change with growth and is not affected by surface injuries. Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one, which bears a rep
11、roduction of the original pattern. It is only when the inner skin is injured that the arrangement will be destroyed. Some criminals make use of this fact to remove their own finger-prints but this is a dangerous and rare step to take. Finger-prints can be made very easily with printers ink. They can
12、 by recorded easily. With special methods, identification can be achieved successfully within a short time. Because of the simplicity and economy of this system, finger-prints have often been used as a method of solving criminal case. A suspected man may deny a charge but this may be in vain. His fi
13、nger-prints can prove who he is even if his appearance has been changed by age or accident. When a suspect leaves finger-prints behind at the scene of a crime, they are difficult to detect with the naked eye. Special techniques are used to “develop” them. Some of the marks found are incomplete but i
14、dentification is possible if a print of a quarter of an inch square can be obtained.( ) 1. Scientists and experts have proved that the pattern of a human beings finger skin _. A. is similar to his mothers B. is valuable to himself only C. is like that of others with the same type of blood D. is diff
15、erent from that of all others ( ) 2. If your fingers are wounded by knife, fire or other means, the structure of skin will _. A. be changed partly B. be replaced by a different one C. be the same when the wound is recovered D. become ugly ( ) 3. Some criminals remove their own finger-prints by _. A. using printers ink B. injuring the inner skin C. dam
