首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Do you know why different animals or pests have their special colors? Colors in them seem to be used mainly to protect themselve
Do you know why different animals or pests have their special colors? Colors in them seem to be used mainly to protect themselve
admin
2011-01-09
79
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.
Why can the kind of fish live up to now?
选项
A、Because it is very big 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.
答案
B
解析
细节题。最后一段解释了为什么这种鱼可以存活到现在。原因就是它释放出来的液体使得它的敌人找不到它, 这样它就能趁机逃跑。
转载请注明原文地址:https://kaotiyun.com/show/tDlK777K
本试题收录于:
大学英语三级A级题库大学英语三级分类
0
大学英语三级A级
大学英语三级
相关试题推荐
A、Tofixabutton.B、Topreparebreakfast.C、Towaitfortheschoolbus.D、ToplaybasketballBM:Willyoupleasefixthebutton
A、Inabank.B、Inahotel.C、Inalibrary.D、Inanoffice.DM:Susan,canyouhelpmetypethispaper?Mr.Brownwillneeditin
Accordingtothepassage,tobeasuccessfulsalesman,one______.Thepassageindicatesthatsomecompaniesusetelephonesell
Besidesthose,whatcanweseethroughtelevision?Westillcanseepolitical______andthelatestexciting______.Inorder
Remember(mail)______ittomorrow.
Themanbecamerichthroughmakingwise(invest)______.
B这道题中涉及几个数字,因此听懂问题很关键。问题是“哪一件衣服会适合那位男上?”他说6号小10号大,要试试8号的,可见我们应该选8号。
Accordingtotheauthor,______.Tostrengthenafriendlyrelationship,people______.
Mr.Smith(have)______twodaughtersandoneson.
“I’msorry.”hesaid(sincere)______.
随机试题
在当代西方国家,随着中央政府职能的扩展,地方政府的职能()
Thestrangecloseunderstandingbetweentwinsisafamiliarenoughphenomenon.Oftentheyseemtounderstandeachotherandshare
男,18岁,自幼年始反复出现发作性喘息,可自行缓解或经使用“抗炎、平喘药”缓解。6岁后症状逐渐消失。近3天来再次出现喘息,严重时影响睡眠。查体:T37.1℃,肥胖。双肺可闻及哮鸣音。心率100次/分,律齐,P2>A2,双下肢无水肿。该患者最可能的诊断是
A.寒湿阻络B.血脉瘀阻C.湿热毒盛D.热毒伤阴E.气阴两虚脱疽表现为患肢黯红而肿,患肢如煮熟之红枣,渐变为紫黑色,呈浸淫蔓延,溃破腐烂,疼痛异常,彻夜不得安眠。其证型是()
买卖双方采用CIF术语签订了国际货物买卖合同,合同约定装运港为旧金山,目的港为上海。下列表述正确的是( )。
根据《建设工程勘察设计管理条例》,编制施工图设计文件应满足的要求是()。Ⅰ.满足设备材料采购的需要;Ⅱ.满足非标准设备制作和施工的需要;Ⅲ.注明建设工程合理使用年限;Ⅳ.满足工程招标的需要
拱式桥在竖向荷载作用下,两拱脚处不仅产生竖向反力,还产生()。
根据《政府采购法》,政府集中采购目录由()公布。
以木方格为骨架,双面贴板制成的门叫( )。
近日,深圳市公布文件规定,大运会期间,严禁农民工通过群体性上访等非正常手段讨要工资,否则造成严重后果或恶劣影响的,追究其刑事责任。请你谈谈看法。
最新回复
(
0
)