首页
登录
职称英语
Do you know why different animals or pests have their special colors? Colors
Do you know why different animals or pests have their special colors? Colors
游客
2023-09-25
78
管理
问题
Do you know why different animals or pests have their special colors? Colors in them seem to be used mainly to protect themselves.
Some birds like eating locusts(蝗虫), but birds cannot 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 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. This is because they have the colors much like the trees.
Have you ever found an even more strange act? 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. [br] From the passage we learn that locusts ______ .
选项
A、are small animals
B、are easily found by birds
C、are dangerous to their enemies
D、change their colors to protect themselves
答案
D
解析
细节题。根据第二段第二句It is because locusts change their colors together with the change of the colors of crops. 可知, 答案为D。
转载请注明原文地址:http://tihaiku.com/zcyy/3045253.html
相关试题推荐
WhatisrequiredinmanydifferentsituationsinAmericanculture?Anexpression
[originaltext]ManydifferentsituationsinAmericanculturerequireanexpr
Whatanimalsswimfrombirth?Allmammalsexceptmanand______.[br]what’sth
Whatanimalsswimfrombirth?Allmammalsexceptmanand______.[br]Where’st
Whatanimalsswimfrombirth?Allmammalsexceptmanand______.[br]Whatist
Withtheintroductionofthecomputer,librariestodayarequitedifferentfrom
[audioFiles]audio_eham_j61_001(20082)[/audioFiles]A、Takeadifferenttrain.B、G
InWashingtonD.C.,1600PennsyLieniaAnenicaisaveryspecialaddress.It
EveryyearisbusyfortheSavetheChildrenFundbut1989hasbeenespecial
EveryyearisbusyfortheSavetheChildrenFundbut1989hasbeenespecial
随机试题
Historically,thespread,prevalence,andveryexistenceofcontagiousdiseas
There’sNoPlaceLikeHomeOnalmostanynightofthewee
呼吁appealto
甲集团公司下设B事业部从事医药化工业务。B事业部本年度对B药品实施了目标成本管理
求图示梁铰C左侧截面转角时,其虚拟状态应取为()。
正规教育的主要标志是近代以学校系统为核心的教育制度,又称制度化教育。()
A.心虚胆怯证 B.心血不足证 C.瘀阻心脉证 D.痰火扰心证 E.水饮
A.CD33 B.CD3 C.CD19 D.CD41 E.CD4原始巨核
下列对于消防水泵外观质量、材料、结构和机械性能等说法中,不正确的是()。A.所
共用题干 一般资料:求助者,男性,62岁,退休工人。案例介绍:求助者文化水平不
最新回复
(
0
)