Do you know why different animals or insects have their special colors？Colors in them seem to be used mainly to protect themselves．

Some birds like eating locusts（蝗虫），but birds can't easily catch them．Why？It is because locusts change their colors together with the change of the colors of crops．When crops are green，locusts look green．But as the harvest time comes，locusts change to the same brown color as crops have．Some other insects with different colors from plants are easily found and eaten by others，so they have to hide themselves for lives and appear only at night．

If you study the animal life，you will find the main use of coloring is to protect themselves．Bears，lions and other animals move quickly through the forest．They cannot be easily seen by hunters．This is because they have the colors much like the trees．

Have you ever noticed an even more strange fact？A kind of fish in the sea can send out a kind of very black liquid（液体）when it faces danger．While the liquid spreads over，its enemies cannot find it．And it immediately swims away．So it has lived up to now though it is not strong at all．

根据短文内容，选择最佳选项，将其标号在答题卡上涂黑．

（1）What are the special colors of different animals or insects used for？ 　　

A．	Showing their beauty．
B．	Finding themselves．
C．	Protecting themselves．
D．	Seeing others．

（2）In the harvest time，what is the color of the locusts？ 　　

A．	Green．
B．	Brown．
C．	Yellow．
D．	Red．

（3）When do other insects with different colors from plants come out？ 　　

A．	At night．
B．	In the afternoon．
C．	At noon．
D．	In the morning．

（4）Can hunters easily see the bears or lions in the forest？ 　　

A．	I don'tknow．
B．	I am not sure yet．
C．	No，they can't．
D．	Yes，they can．

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