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
2017-11-17
30
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.
The passage mentions that insects_____.
选项
A、can be found in any extreme environments
B、have survived longer than any other creatures
C、can be fed on any natural or man-made foods
D、are important for the growth of crops and flowers
答案
D
解析
推理判断题。本题考查对含有分词结构句子的理解。根据第2段倒数第2句中的useful及分词结构pollinating可推断昆虫对植物的生长有益处。选项A、B、C中都有any,过于绝对。由第3段第2、3句可知选项A不对。文章虽在开头指出昆虫存活的年代久远,但全文未提到它是存活时间最长的生物,所以选项B错误。至于昆虫的食物,第3段倒数第2句有提及,但只是a wide range of,由此可排除选项C。
转载请注明原文地址:https://kaotiyun.com/show/rJa7777K
0
大学英语四级
相关试题推荐
TheUSCongressA)TheUScongressisthelegislativebranchofthefederalgovernment.Itisabicameral(两院制的)law-making
TheUSCongressA)TheUScongressisthelegislativebranchofthefederalgovernment.Itisabicameral(两院制的)law-making
WhichAttributesofaFoodProductareMostImportanttoConsumersA)TheAustralianstateofVictoriaisinvestinginapro
WorkingtoImprovetheConditionsofEvergladesNationalParkA)WhenmanypeoplethinkofFlorida,imagesofsandycoastlin
WorkingtoImprovetheConditionsofEvergladesNationalParkA)WhenmanypeoplethinkofFlorida,imagesofsandycoastlin
WorkingtoImprovetheConditionsofEvergladesNationalParkA)WhenmanypeoplethinkofFlorida,imagesofsandycoastlin
WorkingtoImprovetheConditionsofEvergladesNationalParkA)WhenmanypeoplethinkofFlorida,imagesofsandycoastlin
Fortheemployee,beingplacedinapositionthatiscomfortableandmeetsexpectationswillmakethejoblessstressfulandall
Thereisnodenyingthatstudentsshouldlearnsomethingabouthowcomputerswork,justasweexpectthematleasttounderstand
A、Toattractmoreseaanimalstothetestingsite.B、Todrivedangerousseaanimalsawayfromthetestingsite.C、Tohelptrace
随机试题
下列哪项不属于早产的病因?
简述需求构成三要索和需求量之间的关系。
触酶试验又可称为A.氧化酶试验B.过氧化氢酶试验C.DNA酶试验D.尿素酶试验E.β-内酰先胺酶试验
A、息止颌位法B、吞咽咬合法C、卷舌后舔法D、哥特弓描记法E、前伸颌位记录确定髁导斜度采用
多相脂质体与单相脂质体比较,优点是
施工图预算的编制方法有( )。
下列关于欧洲债券和外国债券的差异的说法,正确的有()。
采取紧缩的流动资产投资策略,可能对企业的影响表现为()。
段落首行左端起始位置在其余各行左端的左面,叫做悬挂缩进。()
()是金融期货中最早出现的品种,是金融期货的重要组成部分。
最新回复
(
0
)