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Do you know why different animals or pests (昆蟲) have their special colors? Colors in them seem to be used mainly to protect themselves.
　　Some birds like eating locusts (蝗蟲), but birds cannot easily catch them. Why? It is because locusts change their colors together with the change of the colors of crops(莊稼). 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 pests 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’ll find the main use of coloring is to protect themselves. Bears, lions and other animals move quietly through forests. They cannot be easily seen by hunters (獵人). This is because they have the colors much like the trees.
Have you ever noticed an even stranger act? A kind of fish in the sea can send out a kind of very black liquid (液體)when it faces danger. While the liquid spreads over (散開), its enemies (敵人)cannot find it. And it immediately swims away. So it has lived up to now though it is not strong at all.
小題1:From the passage we learn that locusts________.
A．are small animalsB．are easily found by birds
C．are dangerous to their enemiesD．change their colors to protect themselves
小題2:How can pests with different colors from plants keep out of danger?
A．They run away quickly.B．They have the colors much like their enemies.
C．They hide themselves by day and appear at night.D．They have to move quietly.
小題3:Bears and lions can keep safe because _________.
A．they have the colors much like the treesB．they move quietly
C．they like brown and gray colorsD．they live in forests
小題4:Why can the kind of fish live up to now?
A．Because it is very and strong.
B．Because the liquid it sends out can help it escape from its enemies.
C．Because the liquid it sends out can kill its enemies.
D．Because it swims faster than any other fish.
小題5:Which is the best title for this passage?
A．The Change of Colors for Animals and PestsB．Colors of Different Animals and Pests
C．The Main Use of Colors for Animals and PestsD．Some Animals and Pests

小題1:D
小題1:C
小題1:A
小題1:B
小題1:C

小題1:根據It is because locusts change their colors together with the change of the colors of crops(莊稼).描述，可知選D。
小題1:根據Some other pests 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.描述，可知選C。
小題1:根據Bears, lions and other animals move quietly through forests. They cannot be easily seen by hunters (獵人). This is because they have the colors much like the trees.描述，可知選A。
小題1:根據A kind of fish in the sea can send out a kind of very black liquid (液體)when it faces danger. While the liquid spreads over (散開), its enemies (敵人)cannot find it. And it immediately swims away. 描述，可知選B。
小題1:通過閱讀短文，可知本文主要介紹了動物和昆蟲是如何通過顏色來保護自己的，故選C，顏色對于動物和昆蟲的主要用途。
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