某县有35万人口，其中农村居民90%，现欲作农村居民AIDS感染情况及其影响因素的调

Today almost everyone knows computers and the Internet. If I ask you “What is the most important thing in your life?” Maybe you will say “Computers and the Internet”. The first computer was made in 1946. It was big but worked slowly.    小题1:    What can computers do? A writer once said, “People can’t live without computer today.”

The Internet is about twenty-five years later than computers.   小题2:    We can use it to read books, send e-mails, do some shopping, play games and make friends.

Young men, especially the high school students like the Internet very much.    小题3:   In the Internet bars, they make friends on the Internet and maybe they have never seen these friends. They don’t know their real names, ages and even sex(性别).    小题4:    Some of them play games in the Internet bars all day and night. Many of them can’t catch up with others in many subjects because of that.

Now the government has done many things. Some gangster bars(黑网吧) have been banned(取缔).    小题5:   The teachers and parents are still worried about these children.

We can use computers and the Internet to learn more about the world. But at the same time, we should remember that computers and the Internet could not do all the things.

阅读短文内容，把下面方框中的句子还原到短文中适当的位置。

由NaHSO₄和MgSO₄组成的混合物中，硫元素的质量分数为a%，则氧元素的质量分数是（　　）

A．2a%

B．0.75a%

C．1-2a%

D．1-a%

不申请行政复议，直接向法院提出行政诉讼的，除法律另有规定的以外，应当在知道作出具体行政行为之日起( )内提出。

A．30日

B．15日

C．3个月

D．2个月

* * 首先是人的生存权和发展权，下列对 * * 的理解正确的是

① 我国在尊重和保障 * * 方面取得的成就，充分反映了人民民主的广泛性

② 我国在尊重和保障 * * 方面取得的成就，充分反映了人民民主的真实性

③ 保护和促进 * * ，必须从保障人民的生存权和发展权这个环节入手

④ 实现 * * 的根本途径是促进经济发展和社会进步

A．①②③

B．②③④

C．①②④

D．①③④

某运输公司5月份完成的货物周转量6000万吨公里，平均每吨公里收入0.50元，同期发生各类事故92次，赔偿金额为15万元。该公司5月份货运事故赔偿率为（）。

A．2.0‰

B．2.5‰

C．5.0‰

D．9.2‰