2．汽车产生的废气对环境有不良影响。

Waste gases which are produced by cars have ___________ the environment．．

1．你的申请表务必准时上交。

Your application form must ___________．

七、完成句子（按所给的汉语，用英语完成下列句子。本大题共9分，每小题1.5分）

六、缺词填空（先通读下面的短文。然后根据短文内容和所给首字母，在空格内填入一个适当的词，使短文意思完整。本大题共6分，每格0.5分）

Millions of words have been w________（1）about young people in the USA．There are reasons for this great i________（2）in their ideas，feelings and actions．

Today there are about seven million Americans in colleges and universities（大学）．Young persons u________（3）twenty-five make up nearly half of the American p________（4）．Many of these will soon be in charge of（负责管理）the nation．Naturally their ideas are i________（5）to everyone in the country，and it is necessary for older people to understand what they t________（6）and feel．

College students today have strong o________（7）about right and wrong．They are deeply interested in m________（8）a better life for all people，e________（9）for those who have not been given a f________（10）chance before now．They see much that is wrong in the lives of their parents．It is h________（11）for them to see what is right and good in the older ways．As a result，there is often t________（12）in American families．

10．The old scientist was awarded a gold medal for what he ________（do）for the development of modern science since the mid-twentieth century．

9．I don't think Aunt Wu would mind ________（take） care of our children while we're away．

8．The engineer ________（search） for some information on the Internet in the study while his wife was cooking in the kitchen．

7．In the old days the working people in our country ________（look）down on．

6．Sometimes clouds are so thick that they do not let much sunshine ________（come）through．

5．The little girl will give the flowers to the hero when he ________（appear）．