【预讲练结四步教学法】14-15英语人教版选修7：Unit 4 Sharing练习

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资源类别教案

资源子类同步教案
教材版本新人教版（现行教材）

所属学科高中英语
适用年级高二年级

适用地区全国通用
文件大小627 K

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更新时间2015/2/4 10:15:17

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【预讲练结】人教选修七Unit 4 Sharing练习

一、阅读理解(共20小题，每小题2分，满分40分)

第一节（共15小题；每小题2分，满分30分）

A

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”

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