通读下面短文,掌握其大意,然后在31~45各题所给的四个选项中选出一个最佳答案。

From the earliest times men seem to have noticed the habits of insects, and to have learnt lessons from them. Ants and bees work very hard during the summer,   31   enough food to last during the winter. They give us a good

example to   32  . If we waste time when the conditions are good for work, we shall probably   33   later; when we really want to work, we are unable to do so.

Moths, and some other insects, cannot help flying towards a light of any kind. The attraction seems to be too strong for them. As a result, they often  34   themselves by flying into something that is burning, such as a lighted candle. In some countries, when such insects as flying ants become a nuisance(讨厌的东西), people   35   themselves by lighting fires at the doors of their cottages. Sometimes the insects fly into the fire in such large numbers that they put it out. In literature we often find poets warning us of the danger of being attacked by   36    or beautiful things that will destroy us.

Butterflies are admired for their   37  , though they receive very little praise for anything else. They fly   38   in the sunshine, going from flower to flower, happy all day long, leading a life of    39   . They are beautiful, but it seems that they are not of much   40   use to anybody. Some human beings lead very much the same sort of life   41   they are butterflies of society.

Locusts are   42  .They are active enough, too active. They spend their time eating the food of others. Unfortunately there are men like this, destroying things wherever they go, taking for themselves   43   belongs to others, using up everything and   44   nothing. They are human   45  .

Perhaps it may be said that even the worst insects have one use: they warn us not to be like them.

31. A. planting.    B. picking   C. collecting    D. growing

32. A. learn      B. follow    C. set       D. accept

33. A. work      B. realize    C. suffer     D. miss

34. A. destroy     B. damage    C. hurt      D. murder

35. A. prevent     B. keep     C. protect     D. escape

36. A. bright     B. burning    C. attractive    D. lighting

37. A. colour     B. attraction   C. beauty     D. work

38. A. about     B. up      C. down     D. high

39. A. hope      B. pleasure   C. business    D. value

40. A. real      B. true     C. proper     D. right

41. A. but      B. and     C. or       D. though

42. A. different    B. similar    C. interesting   D. exciting

43. A. that      B. which    C. all      D. what

44. A. preparing    B. making    C. storing     D. paying

45. A. locusts     B. moths    C. enemies    D. butterflies

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