首页
登录
职称英语
A remarkable variety of insects live in this planet. More species of insects
A remarkable variety of insects live in this planet. More species of insects
游客
2024-01-26
65
管理
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. [br] Some insects disguise like natural objects so as to _____.
选项
A、frighten away their enemies
B、avoid being discovered
C、send warning signals
D、look bitter-tasting
答案
B
解析
推理判断题。本题考查对长句的理解。最后一段第2句中的nearly invisible表明昆虫伪装是为了不被发现,因此B为正确选项。其他选项虽然都是昆虫伪装的目的,但都与伪装成自然物体无关。
转载请注明原文地址:https://tihaiku.com/zcyy/3396358.html
相关试题推荐
Researchershaveidentified1.4millionanimalspeciessofar—andmillionsre
Researchershaveidentified1.4millionanimalspeciessofar—andmillionsre
Researchershaveidentified1.4millionanimalspeciessofar—andmillionsre
Researchershaveidentified1.4millionanimalspeciessofar—andmillionsre
Researchershaveidentified1.4millionanimalspeciessofar—andmillionsre
Universitiesareinstitutionsthatteachawidevarietyofsubjectsatadvan
Aremarkablevarietyofinsectsliveinthisplanet.Morespeciesofinsects
Researchershaveidentified1.4millionanimalspeciessofar—andmillionsre
Researchershaveidentified1.4millionanimalspeciessofar—andmillionsre
Researchershaveidentified1.4millionanimalspeciessofar—andmillionsre
随机试题
David______hiscompany’ssuccesstotheunityofallthestaffandtheirperse
Thetrafficpolicestoppedthreetrucksheavilyloadingwithmerchandisethatlo
Wheredidthisconversationmostlikelytakeplace?[br][originaltext]W:Could
Itishardtobelievethatpeoplecandescribevividlythingsthattheyhave
书刊印刷过程中发生的糊版是指( )。A.背面也可见印在纸张上的图文 B.因印
Projectschedulemanagementismadeupo
下列对颅内压增高的概述中,错误的是A.颅内占位、感染、损伤、缺氧、中毒为常见病因
期货公司应当根据( )提名并聘任首席风险官。A.董事会 B.总经理
填方路段太陡,事先找平修成台阶形式时,每层台阶宽度不宜小于()m。A、1 B
转移癌的临床表现是 A.多见于老年,膝关节病变常见,疼痛与关节活动关系密切
最新回复
(
0
)