摘要:根据汉语肆意写出下列各小题每个单词的正确形式. Do you know why different animals or insects have their 1 colors ? Colors of them seem to be used mainly to keep themselves safe. Some birds like eating locust, but birds cannot 2 them easily. Why ? It is because locusts change theirs colors 3 with the change of the colors of the crops.When crops are green, locusts look green. When crops are brown ,locusts change to the 4 color. Some other insects with different colors from plants are easily found and 5 (吃) by others. So they have to appear only at night. If you study the animals life ,you’ll find the 6 use of coloring is to keep themselves safe. Bears ,lions and other animals move quietly 7 forests. They cannot be easily seen because they have the colors much like the trees. Have you ever seen a kind of fish in the sea can send out something black when it 8. danger and 9 swims away? So it has lived up to now 10 it is not strong at all.

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