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
A remarkable variety of insects live in this planet. More species of insects exist than all other animal species together. Insec
A remarkable variety of insects live in this planet. More species of insects exist than all other animal species together. Insec
admin
2016-10-07
26
问题
A remarkable variety of insects live in this planet. More species of insects exist than all other animal species together. Insects have survived on earth for more than 300 million years, and may possess the ability to survive for millions more.
Insects can be found almost everywhere—on the highest mountains and on the bottom of rushing streams, in the cold South Pole and in bubbling hot springs. They dig through the ground, jump and sing in the trees, and run and dance in the air. They come in many different colors and various shapes. Insects are extremely useful to humans, pollinating (授粉) our crops as well as flowers in meadows, forests, deserts and other areas. But ticks and some insects, such as mosquitoes and fleas, can transmit disease.
There are many reasons why insects are so successful at surviving. Their amazing ability to adapt permits them to live in extreme ranges of temperatures and environments. The one place they have not yet been found to any major extent is in the open oceans. Insects can survive on a wide range of natural and artificial foods—paint, pepper, glue, books, grain, cotton, other insects, plants and animals. Because they are small, they can hide in tiny spaces.
A strong, hard but flexible shell covers their soft organs and is resistant to chemicals, water and physical impact. Their wings give them the option of flying away from dangerous situations or toward food or mates. Also, insects have an enormous reproductive capacity: An African ant queen can lay as many as 43,000 eggs a day.
Another reason for their success is the strategy of protective color. An insect may be right before our eyes, but nearly invisible because it is cleverly disguised like a green leaf, lump of brown soil, gray lichen (青苔), a seed or some other natural object. Some insects use bright, bold colors to send warning signals that they taste bad, sting or are poison. Others have wing patterns that look like the eyes of a huge predator, confusing their enemies. Some insects also imitate bitter-tasting insects; hungry enemies are fooled into avoiding them.
Insects protect themselves from chemicals by_____.
选项
A、hiding in tiny spaces
B、having a strong shell
C、flying away when necessary
D、changing colors or shapes
答案
B
解析
事实细节题。本题考查对复杂句的理解。第4段第1句指出了答案。protect…from…是对resistant to的同义替换。
转载请注明原文地址:https://kaotiyun.com/show/suY7777K
0
大学英语四级
相关试题推荐
Pricesdeterminehowresourcesaretobeused.Theyarealsothemeansbywhichproductsandservicesthatareinlimited【B1】___
A、Tofindoutwhathisinterestis.B、Toencouragehimtotryoutforacollegenewsletter.C、Tohelphimchooseanout-of-class
It’sdifficulttoimaginetheseaeverrunningoutoffish.It’ssovast,sodeep,so【B1】______.Unfortunately,it’snot【B2】____
Stuntpeople(替身演员)arenotmoviestars,buttheyarethehiddenheroesofmanymovies.Theywerearoundlongbeforefilms.E
Inmanycountries,authorityisseldomquestioned,eitherbecauseitishighlyrespected,orbecauseitis【B1】_______.Sometimes
A、Bybringingananimalrarelyseenonnearbyfarms.B、Bybringingabagofgraininexchangeforaticket.C、Byofferingtodo
Weoftenpassonlittlebitsofinformationtoourchildren,notknowingiftheyaretrue,andonlybecausetheywere【B1】_______
A、Shehasacomputerrelatedmajor.B、Shecanmendcomputers.C、Sheisgoodatlanguage.D、Sheisacollegestudentnow.A
香港中文大学成立于1963年,是一所研究型综合大学,以“结合传统与现代,融汇中国与西方”为创校使命。40多年来,它一直致力于弘扬中华传统文化,坚持双语(bilingual)教育,并推行独特的书院制度(collegesystem),在香港教育界卓然而立。其
随机试题
下列属于质量指标指数的是()
如果通过局域网连接Internet,则需要设置TCP/IP协议的属性,当指定IP地址时,需要指定3个IP地址,即本机地址、默认网关和____________。
某项目预计建成后的年固定成本为50万元,每件产品估计售价为50元,单位产品变动成本为20元,销售税率为10%。则该项目盈亏平衡点的产量为()件。
采用工程量清单招标时,要求投标价根据()编制得出。
根据管理方格理论,领导者对生产的关心和对人的关心都达到最高水平,能使组织的目标和个人的需求最有效地结合起来的管理方式是()。[2007、2004年真题]
20世纪50年代以后对世界教育学产生广泛影响的教育家是()。
“儿童中心主义”教育理论,违背了()。
()是学校进行素质教育的基本途径,是学校工作的中心环节,这是我国建国以来教育工作经验的总结。
如图,在长方形跑道上,甲、乙两人分别从A、C处同时出发,按顺时针方向沿跑道匀速奔跑,已知甲、乙两人的速度分别是5米/秒、4.5米/秒。则当甲第一次追上乙时,甲沿长方形跑道跑过的圈数是()。
试述违宪审查的模式。
最新回复
(
0
)