Question

Pigs are always considered dirty animals because they roll in mud．But in fact they prefer  being quite clean．They cover themselves with mud to help stay cool．During cooler weather,  they prefer to stay clean．So do elephants,who also cover themselves in dust or mud to keep cool．When they find a place with clean water they will take a bath，using their long noses to give  themselves—or each other—a nice shower
Some animals use dust to get clean．Chinchillas (南美洲栗鼠) have very fine fur． They don`t like to take water baths because water is not warm enough for them．So, instead, they roll  around in fine dust．The dust helps to keep their fur and skin dry．This protects them from disease
Usually, a small bird is a light meal for a crocodile．But when a crocodile wants its teeth  cleaned．it lies on the ground with its mouth open．The crocodile bird goes in and picks out any  parasites(寄生虫)between the crocodile`s teeth or under its tongue．The crocodile gets its mouth cleaned，and the crocodile bird gets dinner．
You wouldn`t think fish would need baths．But some undersea parasites live under the  fish`s skin．“Cleaner”fish，like the wrasse(隆头鱼)，help take them away．The wrasse stands on its head and dances to signal a big fish that it is ready to go into the cleaning business．The big fish will stop moving and open its mouth wide so the wrasse can swim inside and pick out  parasites and bits of food．
【小题1】The passage is mainly about how animals         ．

A．stay clean

B．help each other

C．get their food

D．Take baths

【小题2】What can we learn from the first paragraph about pigs?

A．They can help each other take baths．

B．They are dirtier during cooler weather．

C．They prefer taking baths to rolling in mud．

D．They like to stay cool and clean．

【小题3】Chinchillas use dust to get clean for the following reasons EXCEPT that         ．

A． dust can dry their fur and skin

B．They are not good at swimming

C．Water is too cold for them

D．Dust is good for their health

【小题4】From Paragraphs 3 and 4，we earl know that         ．

A．some animals can get clean from others`help

B．Most animals are friendly to each other

C．small animals couldn`t get food from big ones

D．All of the animals prefer to stay clean

【小题5】We can infer from the last paragraph that the wrasse

A．is often eaten by other fish

B．1ikes under other fish`s skin

C．is a small kind of fish

D．1ikes taking baths

Answer 1

【小题1】A
【小题2】D
【小题3】B
【小题4】A
【小题5】C

解析试题分析：本文主要讲了各种动物是如何保持清洁的，并且举例说明有些动物需要其它动物来帮忙清洁。
【小题1】这篇文章主要讲了动物是怎样保持清洁的，故选A。
【小题2】根据But in fact they prefer  being quite clean．They cover themselves with mud to help stay cool．故选D。
【小题3】根据Chinchillas (南美洲栗鼠) have very fine fur． They don`t like to take water baths because water is not warm enough for them．So, instead, they roll  around in fine dust．The dust helps to keep their fur and skin dry．This protects them from disease，可知答案为 B。
【小题4】根据The crocodile gets its mouth cleaned，and the crocodile bird gets dinner．You wouldn`t think fish would need baths．But some undersea parasites live under the  fish`s skin．“Cleaner”fish，like the wrasse(隆头鱼)，help take them away．故选A。
【小题5】根据But some undersea parasites live under the  fish`s skin．“Cleaner”fish，like the wrasse(隆头鱼)，help take them away．可知答案为C。
考点：科普环保类短文阅读理解
点评：先阅读问题，然后带着问题，再读全文，找出答题所需要的依据，完成阅读。这篇文章非常容易，根据问题找到相关问题的段落或句子，便可选出答案。