某企业购得一个已停工5年的在建工程，结构封顶，其中1-4层为商业裙楼，5-27层为住

阅读理解。

     People and air pollution are often in the same places. This means that cities with large populations have

  the biggest problem of dirty air. Air pollution is caused by many different things. A major kind of air

 pollution is the gas from cars. Statistics (统计资料) show that 93 percent of all auto trips are within cities.

 Another major kind of dirty air is the burning of coal and oil for energy. This energy is needed to make

 electricity. Of course, much more electricity is used in the city than in the country.

     On the average, we throw away more rubbish than the year before. The burning of rubbish makes air

 pollution even worse. Many major industries are also responsible for the dirty air in the around cities. The

 fumes (烟) from iron, steel, chemical, and petrol production add particles (微粒)  to the air.

     The effects of air pollution range from mild headaches to death. The levels of pollution found in heavy

 traffic may cause headaches for loss of clear vision. Wherever coal and oil are used for fuel, fumes may

  kill trees and plants and cause metal to corrode (腐蚀). In some of the larger cities, these fumes endanger

 the live of human beings by contributing to lung diseases and causing early death.

1. Why is air pollution more in the city than in the country?

    A. Because there are larger populations in cities.

    B. Because the air in the city is dirty.

    C. Because there are more cars in the city.

    D. Because there are much more gas fumes from cars.

2. The fumes from coal and oil may cause metal _____.

    A. to turn black                                      

    B. to become rusty

    C. to corrode                                          

    D. to twist

4. In larger cities,  the fumes from coal and oil may cause _____.

    A. heart diseases                        

    B. lung diseases

    C. loss of clear vision                    

    D. serious headaches

5. The main idea of the passage is that _____.

    A. the cause of air pollution is people

    B. the causes and the effects of air pollution are both found in cities

    C. the effects of air pollution range from headaches to death

    D. air pollution is caused by dirty air

6. What is the purpose of this passage?

    A. To tell people to stop polluting the air.

    B. To tell the causes of air pollution.

    C. To tell why cities are bad places to live in.

    D. To describe why cities are good places to live in.

本世纪初，魏格纳提出了大陆漂移说，由于他的学说以未查明的足以使大陆漂移的动力为假设，所以遭到了强烈反对。我们现在接受了魏格纳的理论，这并不是因为我们确认了足以使大陆漂移的动力，而是因为新的仪器最终使我们能够通过观察确认了大陆的移动。以上事例最好地说明了以下哪项有关科学的陈述 (2)三位演讲者在午餐前发言，另三位在午餐后发言。(3)G一定在午餐前发言。(4)仅有一位发言者处在M和N之间。(5)F在第一位或第三位发言。

A．科学的目标是用一个简单和谐的理论来精确地解释自然界的多样性

B．在对自然界进行数学描述的过程中，科学在识别潜在动力方面已经变得非常精确

C．借助于概率论和数理统计方法，科学从对单一现象的描述转向对事物整体的研究

D．当一个理论所假定的事件被确认时，即使没有对这种事件形成的原因做出解释，这一理论也可以被接受

什么是国防戏剧？

异烟肼应检查的特殊杂质是（）。

A．游离水杨酸

B．游离肼

C．对氨基苯甲酸

D．其他甾体

E．盐酸