完形填空
阅读下列短文,从文后各题所给的四个选项中选出一个最佳答案。
Do you know why different animals or pests(害虫) have their special colors? Colors in them seem to be mainly used to
___1___ themselves.
Some birds like eating locusts(蝗虫), but birds cannot
___2___catch them. Why? It is because locusts change their
__3___ with the change of the colors of crops. When crops are green, locusts look
___4___. But as the harvest time comes, locusts change into the same brown color
__5___ crops have. Some other pests whose colors are
___6__ plants are easily found and eaten by
___7___. So they have to hide themselves for lives and appear only
__8____.
If you
___9___ animals’ life, you’ll find the main use of colors is to protect
__10___. Bears, lions and other animals
___11___ quietly through forests. They cannot be easily seen by hunters
___12___ their colors are much like the trees.
Colors are useful not only on the land, but also in the
__13___. A kind of fish can
__14____ a kind of black liquid(液体) when they face danger. The liquid spreads over quickly, so they cannot be found by their enemies and can quickly swim away. That is
___15____ they can live safely though they are not strong at all. So colors are really useful to animals.
小题1: | A.show | B.protect | C.kill | D.interest |
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小题2: | A.easily | B.freely | C.safely | D.differently |
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小题3: | A.sizes | B.smells | C.colors | D.shapes |
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小题4: | A.yellow | B.red | C.black | D.green |
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小题6: | A.different from | B.same as | C.similar to | D.opposite with |
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小题7: | A.other | B.others | C.the others | D.another |
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小题8: | A.in the morning | B.at noon | C.at night | D.in the daytime |
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小题9: | A.study | B.write | C.draw | D.work |
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小题10: | A.them | B.themselves | C.it | D.itself |
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小题12: | A.because | B.so | C.and | D.although |
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小题13: | A.forests | B.desert | C.sea | D.mountains |
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小题14: | A.keep out | B.come out | C.look out | D.give out |
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