单选题 I"m usually fairly skeptical about any research that concludes that people are either happier or unhappier or more or less certain of themselves than they were 50 years ago. While any of these statements might be true, they are practically impossible to prove scientifically. Still, I was struck by a report which concluded that today"s children are significantly more anxious than children in the 1950s. In fact, the analysis showed, normal children ages 9 to 17 exhibit a higher level of anxiety today than children who were treated for mental illness 50 years ago.
Why are America"s kids so stressed? The report cites two main causes: increasing physical isolation—brought on by high divorce rates and less involvement in community, among other things—and a growing perception that the world is a more dangerous place.
Given that we can"t turn the clock back, adults can still do plenty to help the next generation cope.
At the top of the list is nurturing a better appreciation of the limits of individualism. No child is an island. Strengthening social ties helps build communities and protect individuals against stress.
To help kids build stronger connections with others, you can pull the plug on TVs and computers. Your family will thank you later. They will have more time for face-to-face relationships, and they will get more sleep.
Limit the amount of virtual violence your children are exposed to. It"s not just video games and movies; children see a lot of murder and crime on the local news.
Keep your expectations for your children reasonable. Many highly successful people never attended Harvard or Yale.
Make exercise part of your daily routine. It will help you cope with your own anxieties and provide a good model for your kids. Sometimes anxiety is unavoidable. But it doesn"t have to ruin your life.

单选题 The author thinks that the conclusions of any research about people"s state of mind are ______.

单选题 What does the author mean when he says, "we can"t turn the clock back"?

单选题 According to an analysis, compared with normal children today, children treated as mentally ill 50 years ago ______.

【正确答案】 C

【答案解析】[解析] 题干问：根据一项研究，与现在的正常孩子相比，50年前被认为有精神疾病的孩子是怎样的。由“In fact, the analysis showed, normal children ages 9 to 17 exhibit a higher level of anxiety today than children who were treated for mental illness 50 years ago.”(be treated mentally ill意思是be treated for mental illness)可知，C选项是正确答案。

单选题 The first and most important thing parents should do to help their children is ______.

【正确答案】 C

【答案解析】[解析] 题干问：家长帮助孩子的首要的事情是什么。“The first and most important thing”意为“首要的是……”，与第四段中的at the top of the list是同义替换。由“At the top of the list is nurturing(培育)a better appreciation of the limits of individualism. No child is an island. Strengthening social ties helps build communities and protect individuals against stress.”可知，应该让孩子们更多地与他人交往，所以C选项是正确答案。