单元检测（二十一） Body Language and Nonverbal Communication

　　Ⅰ.语法填空

　　Many people think the more time is spent, the more work will be done. So students have to spend the whole day __1__ (finish) schoolwork except the three meals. According to a survey __2__ (carry) out recently, many high school students now have no more than 7 hours to sleep. Consequently, their health is seriously damaged.

　　Modern students usually have __3__ (various) of interests and hobbies. A two­day weekend can free them __4__ too much schoolwork, and they can do whatever they like. But the fact is __5__ teachers arrange lots of homework for students to do at weekends. With piles of homework __6__ (do), the students cannot afford time to enjoy themselves. Many students are bored with their weekend homework and do it carelessly, __7__， of course, makes teachers angry.

　　Things always get worse without right ideas. Too much schoolwork makes students lose interest in learning. It's also bad for their health.

　　A horse runs faster after a rest. But for students only rest is not enough. They are __8__ (heavy) burdened with too much homework. It is high time we __9__ (take) effective measures to remove the burden upon them.

　　Please give students __10__ (little) homework and leave them more free time.

　　语篇解读：现在，许多高中生除了三餐外都在抓紧时间学习；然而太多的作业让他们失去了学习兴趣，甚至危害到他们的健康。本文作者倡导学生应该劳逸结合，注重学习效率。

　　1．finishing　spend ...(in) doing sth.表示"某人花时间或精力做某事"。

　　2．carried　提示词carry所表示的动作与a survey之间是被动关系，故填过去分词。过去分词短语carried out recently作后置定语，修饰a survey。

　　3．varieties　varieties of ...为固定搭配，意为"各种各样的......"。

　　4．from　free sb. from ...是固定搭配，意为"把某人从......中解放出来"。

　　5．that　分析本句句子结构可知，此处需用that引导表语从句，在从句中只起连接作用，不充当任何成分。

6．to do　with sth. to do表示"有某事需要去做"。