按井下同时工作的最多人数计算，每人每分钟供给风量不得小于5立方米

材料：土地改革的基本内容就是没收地主阶级的土地，分配给无地或少地的农民。这样，当做一个阶级来说，就在社会上废除了地主这一阶级，把封建剥削的土地所有制改变为农民的土地所有制。这种改革，诚然是中国历史上几千年来一次最大、最彻底的改革。——刘 * * 《关于土地改革问题的报告》

（1）根据材料，土地改革中被消灭的阶级是哪个阶级？土地改革后谁将获得土地的所有权？

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（2）为推进土地改革，中央人民政府颁布的一个重要法律文件的名称是什么？

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      Yao Ming has retired from the NBA, the pleasure we have got by watching him play basketball at home and abroad will last long．

A．Although

B．If

C．'Since

D．Once

When the recent research was analyzed（分析）, it was found that a lot of people wanted free pictures or free music from the Web. If it couldn’t be free, then they wanted it “new” or at least at a low price. It seems that 70 percent of people aged 16 to 24 download music online but only 1 in 40 tracks are bought legally.

Thus, some companies are planning to give all of their music away for free. The music will be totally free except that you will have to pay with your time by watching advertisements. This will be perfect for those who have lots of time but little money.

The Web has encouraged a belief that things can be free, or at least very cheap. It seems that everyone is looking for a good deal on the Web. The desire for free objects is part of the nature of the Web because the Web is about self-service and self-service is all about being free, cheap, fast and convenient. It’s interesting how words change their meaning. Stealing has now become file sharing, but it’s not really stealing, is it?

Free is a funny word. We all know that very little is really for free. If we go searching on the Web for free music, we know—or should know—that there are risks involved. However, it doesn’t matter. We still want free things, or at least the sense that we’re getting a real bargain and that at a minimum we’re saving time.

What can be the worst experience on the Web? A site that charges us high prices and wastes our time.

小题1:What is the best title for the text?

A．The Nature of the Web

B．The Web and the Culture of “ Free”

C．Stealing and File Sharing

D．What Does the Word “ Free” Mean?小题2:Why do some companies “ sell” their music for free?

A．Their music is not popular and is out of date.

B．Most people have lots of time but little money.

C．Their music can’t be sold new or for a low price.

D．They can earn money from the advertisements added in the music.小题3:Which of the following can best describe the belief of the Web?

A．Risky behaviour

B．Stealing

C．File sharing

D．For fun.

青霉素最常见和最应警惕的不良反应是（）

A.过敏反应

B.腹泻、恶心、呕吐

C.听力减退

D.二重感染

E.肝、肾损害

固体分散体制备时，如形成共沉淀物，药物与载体以何种状态存在

A．分子

B．胶态

C．微晶

D．无定形

E．晶体