问题 选择题

2006年12月上、中旬,太阳连续出现多次强烈耀斑爆发活动,其中三次的能量级达到了X级(耀斑爆发最高能级)。这次耀斑爆发造成我国短波通信、广播、探测等电子信息系统发生大面积中断或受到较长时间的严重干扰。据此回答下列问题。

小题1:耀斑爆发时(    )

A.耀斑区的温度会较周围区域变低

B.耀斑区的亮度会较周围区域变暗

C.会释放出巨大的能量

D.对地球不会造成任何影响小题2:耀斑爆发时,会强烈的干扰地球(    ),从而影响无线电通讯。

A.高空的电离层

B.磁场

C.高空的臭氧层

D.大气的全球性环流运动

答案

小题1:C

小题2:A

试题解析:

小题1:耀斑发生在 * * 层,亮度高,发生时,不断的发出大量的高能带电粒子流(电磁波),影响地球,如极光、无线电、磁暴等,而温度低时黑子的特征。选C。

小题2:耀斑爆发时,发射的电磁波进入地球大气层,会引起大气层的扰动(影响电离层),使得无线电短波通讯受影响。

阅读理解

I usually doubt 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, 1 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 between 9 and 17 have 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 (孤独) brought on by high divorce rates and less involvement in community, 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 to cope.

At the top of the list,nurturing (培育) is 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 then have more time for face-to-face relationships, and they will get more sleep.

Limit the amount of virtual (虚拟的) 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 deal 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.

小题1:What does the author thinks of the conclusion that people in America are unhappier than 50 years ago?

A.Surprising

B.Confusing

C.Illogical

D.Questionable小题2:What does the author mean by saying “ we can’t turn the clock back(Para. 3)?

A.It’s impossible to slow down the pace of the change.

B.The social reality children are facing cannot be changed.

C.Lessons learned from the past should not be forgotten.

D.It’s impossible to forget the past.小题3:According to an analysis, compared with normal children today, children 50 years ago __________.

A.were less isolated physically

B.were probably less self-centered

C.probably suffered less from anxiety

D.were considered less individualistic小题4:What is the first and most important thing parents should do to help their children?

A.To provide them with a safer environment.

B.To lower their expectations for them.

C.To get them more involved socially.

D.To set a good model for them to follow.小题5:What conclusion can be drawn from the passage?

A.Anxiety, though always unavoidable, can be coped with.

B.Children’s anxiety has been enormously exaggerated(夸大).

C.Children’s anxiety can be removed with more parental care.

D.Anxiety, if properly controlled, may help children become mature.

填空题