问题
单项选择题
Die Lsung des Problems ________ von vielen Faktoren ab.
A．lehnt
B．hngt
C．gibt
D．holt
答案
参考答案：B
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Die Lsung des Problems ________ von vielen Faktoren ab.
A．lehnt
B．hngt
C．gibt
D．holt
参考答案：B
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.
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