Question

6．Different animals or pests（有害物） have their special colors？They use their special colors to protect（保護(hù)） themselves．
Some birds like eating locusts（蝗蟲）．But birds cannot easily catch them．Why？It is because locusts change（改變） 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 protecting themselves．Bears，lions and other animals move quietly through forests．They cannot be seen by hunters（獵人）．This is because they have the colors much like the tree．
Have you ever noticed （注意）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 spread over，the enemies（敵人） cannot find it．And it immediately swims away．So it has lived up to now though it isn't strong at all．

Answer the questions according to the passage．
76．Why can't some birds easily catch locusts？It is because locusts change（改變）their colors together with the change of the colors of crops
77．Some pets have different colors from plants．How can they keep out of danger？They have to hide themselves for lives and appear only at night
78．Why can't hunters see bears？Because they have thecolors much like the tree
79．What can the kind of fish sent out when it faces danger？It can send out a kind of very black liquid（液體）when it faces danger
80．Can birds easily find locusts？No，they can't．

Answer 1

分析 這篇文章講述了不同的動物和害蟲都會有著和環(huán)境相似的顏色，這些顏色主要是用來保護(hù)它們自己不傷害．

解答 76．It is because locusts change（改變） their colors together with the change of the colors of crops．細(xì)節(jié)理解題．根據(jù)It is because locusts change（改變） their colors together with the change of the colors of crops（莊稼）．可知因為蝗蟲隨著莊稼顏色的改變而改變它們的顏色，所以鳥不容易捉住他們，故答案為：It is because locusts change（改變） their colors together with the change of the colors of crops．
77．They have to hide themselves for lives and appear only at night．細(xì)節(jié)理解題．根據(jù)So they have to hide themselves for lives and appear only at night．可知一些動物不得不在白天隱藏自己，只在晚上出現(xiàn)，故答案為：They have to hide themselves for lives and appear only at night．
78．Because they have the colors much like the tree．細(xì)節(jié)理解題．根據(jù)They cannot be seen by hunters（獵人）．This is because they have the colors much like the tree．可知獵人看不見獵物是因為它們的顏色很像樹，故答案為：Because they have the colors much like the tree．
79．It can send out a kind of very black liquid（液體） when it faces danger．細(xì)節(jié)理解題．根據(jù)A kind of fish in the sea can send out a kind of very black liquid（液體） when it faces danger．可知一種海里的魚當(dāng)面臨危險的時候會放出一種黑色的液體故答案為：It can send out a kind of very black liquid（液體） when it faces danger．
80．No，they can't．細(xì)節(jié)理解題．根據(jù)But birds cannot easily catch them可知鳥不容易捉住他們，故答案為：No，they can't．

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