处理砂砾石坝基的主要目的是（）。 A.渗流控制 B.强度控制 C.沉降控制 D. A

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。

下列成语使用不恰当的一项是（   ）

A．古往今来，一切有识之士有为之人，都能把握自己，以沉醉于金钱、美女为戒；而只是沉迷于声色犬马的人，没有不玩物丧志的。

B．教师在课堂上讲授，不但不能减其所有，反可得到教学相长的益处。

C．对我们这些平凡的芸芸众生来说，生命的光辉也许并不辉煌，但同样可以闪光。

D．我国离大海最远的城市——乌鲁木齐，有了来自东海之滨的直达列车。从此，“春风不度玉门关”的诗句成了真正的千古绝唱。

曲轴红套滑移方向不同将使（）增大或减小。

A．定时

B．油门

C.曲柄夹角

D．功率

《史记》记载：公元前544年，“齐相庆封有罪，自齐来奔吴。吴予庆封朱方（县名，后改名为丹徒）之县，以为奉邑，以女妻之，富于在齐”。材料反映春秋时期（）

A.分封制全面崩溃

B.宗法制荡然无存

C.郡县制初现雏形

D.实行郡国并行制

哪些情况构成货运大事故？