下列哪项不属于水泥砂浆的特性（）。 A.强度高 B.耐久性好 C.流动性好 D.耐火

顾炎武说：“八股之害，等于焚书；而败坏人材，有甚于咸阳之郊所坑者但四百六十余人也。”他是针对什么提出上述观点的？他的观点是否正确？请你评论顾炎武这一观点。

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闪变电压是指( )。

A．冲击性功率负荷造成供电系统在0.1s内U_max与Umi_N差值大于10V

B．冲击性功率负荷造成供电系统在0.01s内U_max与Umi_N差值大于10V

C．冲击性功率负荷造成供电系统在0.001s内U_max与Umi_N差值大于10V

D．冲击性功率负荷造成供电系统频率波动大于0.01Hz的闪变的电压波动

阅读理解。

     Scientific discoveries have changed man's life a great deal during the past century. First of all, they have

greatly improved material well-being in several areas of life. In the field of medicine, cures for life threatening

diseases have enabled people to live longer. In communication, the telephone and e-mail have made it possible

for us to communicate with anyone in the world without leaving our homes or offices. Advances in

transportation allow businessmen to fly across the ocean in the morning and return home the same evening.

Space technology has put men on the moon. More efficient ways of using available resources, such as coal

and solar power, have been explored.

     Scientific discoveries have also changed man's moral atmosphere. Ethical (伦理的) issues are raised by

these discoveries. Should we keep a terminally ill person alive through drugs and machines or should we allow

him to die in dignity? With advances in transportation had come the problem of pollution for nearly every major

city in the world. If cities become uninhabitable, then such technical advances may come with too great a price

to pay. Many people also question the wisdom of sending men to the moon when there are urgent problems

that have not been solved on earth. During future years, increasing attention must be given to the moral as well

as the practical applications of science.

1. Scientific discoveries have improved man's life in several fields. Which of the following is not mentioned in

    the passage? [ ]

A. medicine

B. communication and transportation

C. education

D. space technology

2. Which of the following statements is true according to the passage? [ ]

A. Scientific discoveries have only changed man's moral atmosphere.

B. Scientific discoveries have only changed man's material well-being.

C. Scientific discoveries have helped people find efficient ways of using available resources.

D. Men are sent to the moon because there are urgent problems that have not been solved on earth.

3. At the end of the passage the author says that increasing attention must be given to _____. [ ]

A. the moral applications of science

B. the practical applications of science

C. urgent problems on the earth

D. both A and B

4. The best title for the passage is _____. [ ]

A. Science discoveries

B. Science and daily life

C. Advances in transportation

D. City pollution

寄生虫感染时，浸润的炎症细胞主要是（）

A.中性粒细胞

B.单核细胞

C.淋巴细胞

D.嗜酸性粒细胞

E.浆细胞