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
2024-02-02
54
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:http://tihaiku.com/zcyy/3414550.html
相关试题推荐
Theownershipofpetsbringsavarietyofbenefitsthattheuninitiatedwoul
Comparativelyfewfresh-waterspeciesoffishesarelimitedintheirdistrib
Comparativelyfewfresh-waterspeciesoffishesarelimitedintheirdistrib
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendp
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendp
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendp
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendp
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendp
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendp
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendp
随机试题
【B1】[br]【B5】A、orB、afterC、andD、fromA熊每年睡四或五个月。
FrictionbetweenAmerica’smilitaryanditscivilianoverseersisnothingne
TheflavorofasaladoilisAusuallyenhancedbythefoodsBthatarepreserved
将它握在手中仔细观察,它的暗红色中有血的感觉,那正是生命的痕迹。Ifyouholdtheglassinthehand,youwillobse
某中药水提取液,在试管中强烈振摇后,产生大量持久性泡沫,该提取液中可能含有()
下列对分包描述不正确的是()A.分包项目必须经监理同意,甲方无权过问 B.总
A.腮腺淋巴结 B.颏下和肩胛舌骨肌的淋巴结 C.颈深淋巴结 D.颌下和颈
A.止嗽散 B.泻白散 C.清气化痰丸 D.苏子降气汤 E.贝母瓜蒌散热
Forsomeobscurereason,thesimplegame
有位学生将几片纸屑随意扔在走廊上,王老师路过时顺手捡起并丢进垃圾桶,该学生满脸羞
最新回复
(
0
)