23. A. effective　　　　 B. efficent　　　　　 C. explict　　　　　 D. extreme

22. A. solve　　　　　　 B. drive　　　　　　 C. kill　　　 　　　　D. murder

21. A. Trying　　　　　 B. managing　　　　 C. coming　　　　　 D. failing

40．A．in　　 　　　　　　　　 B．from　　 　　　　　　　 C．of 　　　　　　　　　　　　 D．by

答案　 21.B　 22.C　 23.A　 24.B　 25.D　 26.A　 27.B　 28.C　 29.D　 30.C　 31.A　 32.C　 33.A　 34.D　 35.C　 36.B　 37.D　 38.A　 39.C　 40.B

Passage 4

(浙江省宁海县知恩中学2009届高三最后适应性考试)

Of all man’s natural enemies, the one that has caused him more trouble than any other must be the common rat. For centuries, man has been 　21　 to solve the problem of rats. The ancient Egyptians were probably the first people to try to 　22　 them with poison, and this method is still being used today. This says a great deal about how 　23　 this method has been. We have set innumerable 　24　 , from simple wires to 　25　 machines that drowned the rats in beer! We have tried to inflect them with 　26　 developed germs. We’ve 　27 tried to raise super cats to kill them. However, we are still losing the 　28　 .

So why can’t man manage to 　29　 a mere animal like the rat? The answer is simply that the rat isn’t a mere animal; It is a very special kind of animal. An average rat 　30　 : wriggle through a hole no 　31　 than a $1 coin; climb a brick wall as if it were climbing steps; happily leave a building by being flushed down the toilet, and then return the same 　32　 ; jump from a fifth storey window and run away 　33　 ; and last but certainly not least , 　34　 so rapidly that a single pair could have 15,000 babies in one year!

35　 all these phyical qualities, we also have the 　36　 that rats are rather good at not getting caught. They seem to have an almost supernatural ability to 　37　 when food has been poisoned and a suspicious rat will starve　 38　 it eats poisoned food. They also seem to be able to　 39　 a trap with no real difficulty.

One thing looks certain, we had better find a way to 　40　 these small brown creatures soon, or it may be too late.

39．A．this　　 　　　　　　　 B．which　　 　　　　　　　 C．what 　　　　　　　　　　 D．that

38．A。item　　 　　　　　　 B．element　　 　　　　　 C．subject 　　　　　　　　　 D．goods

37．A．goal　　 　　　　　　 B．task　　 　　　　　　　　 C．function 　　　　　　　　 D．purpose

36．A．equipment　　 　　 B．appliance　　 　　　　 C．furniture 　　　　　　　 D．aid

35．A．moment　　 　　　 B．period　　 　　　　　　 C．run 　　　　　　　　　　　 D．time

34．A．products　　 　　　 B．material　　 　　　　　 C．ownership　　　　　　　 D．possession