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
2023-07-02
31
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/2801633.html
相关试题推荐
TheEarthhasbeenstrippedofupto90%ofitsspeciesfivetimesbeforein
TheEarthhasbeenstrippedofupto90%ofitsspeciesfivetimesbeforein
TheEarthhasbeenstrippedofupto90%ofitsspeciesfivetimesbeforein
TheEarthhasbeenstrippedofupto90%ofitsspeciesfivetimesbeforein
TheEarthhasbeenstrippedofupto90%ofitsspeciesfivetimesbeforein
Theownershipofpetsbringsavarietyofbenefitsthattheuninitiatedwoul
Theownershipofpetsbringsavarietyofbenefitsthattheuninitiatedwoul
Theownershipofpetsbringsavarietyofbenefitsthattheuninitiatedwoul
Theownershipofpetsbringsavarietyofbenefitsthattheuninitiatedwoul
Theownershipofpetsbringsavarietyofbenefitsthattheuninitiatedwoul
随机试题
FranklinD.RooseveltRooseveltwaselectedPre
乙炔等气体燃烧或爆炸发生的火灾属于()火灾。A.A类 B.B类 C.
下列疾病可使血小板减少,但哪项除外()A.急性粒细胞白血病B.脾功能亢进C.再
IaskedLilywhethershewantedtogosw
A.对患者义务和对社会义务的统一B.保持和恢复健康,积极配合医疗,支持医学科学研
下列关于公共政策的基本功能的表述,正确的是( )。A.公共政策的功能就是公共政
在对存货执行抽盘时,以下做法中,恰当的是( )。A.尽量将难以盘点或隐蔽性较大
采用钻井法凿井,说法正确的是()。A.钻井法以钻头刀具破碎岩石,用泥浆或其他介质
某地区冰冻深度达到1.3m,在冬期施工开挖路堑表层冻土的方法宜采用()。A
不适宜作金属涂层热源的是( )。A.电弧 B.等离子弧 C.过热蒸汽 D
最新回复
(
0
)