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问题 选择题

与人类活动有关的环境问题是

A．酸雨

B．温室效应增强

C．臭氧层破坏

D．以上都有

答案

答案：D

本题考查人类活动对生物圈的影响。生物圈是人类和一切生物赖以生存的自然环境，可是今天人类的活动引发的环境问题正威胁着人类自身，如酸雨、臭氧层破坏、温室效应增强、水污染、噪声污染及土壤污染等环境问题。

完形填空

短文填空 先通读下面的短文，然后根据短文内容和所给首字母，在空格内填入一个适当的词，使短文意思完整。所填单词必须在答卷标有题号的横线上完整写出。（本大题共5分， 每格0. 5分）

A schoolboy’s life is in preparation for the real battle (奋斗) of life. It is also f      ___(1) of differences and interests. One of the most important p      ____(2) of a schoolboy’s life is to get as much knowledge and good mind-t       ___(3) as he can. His main business in school is to learn. He has to read the book he is t     (4) in classes. He has to do the homework set to him. Another part that forms (形成) a schoolboy's life is the school discipline (纪律). At school there are strict rules to be k      ___(5). This strict discipline is very useful for him when he e      ___(6) society(社会) to make a living. It teaches him some very necessary virtues (美德) on the r      ___(7) to a social life.

School is a place for a schoolboy to learn what the social life is l      (8). For in the classroom and the playground, he has to mix with his fellows (同伴) and not the m      (9) of his family.

This is also the way when he has to carry h     (10) in society.

小题1:____________ 小题2:____________ 小题3:____________ 小题4:____________ 小题5:          小题6:____________ 小题7:___________ 小题8:____________ 小题9:___________ 小题10:____________
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单项选择题 B型题

化验室要求空气中的细菌总数（）

A.≤10cfu/m3

B.≤100cfu/m3

C.≤200cfu/m3

D.≤500cfu/m3

E.≥500cfu/m3
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