问题 填空题

某地区有座硫酸厂,该厂每天排放出大量含二氧化硫的废气和含有硫酸的酸性废水。当地的其他工厂和居民均利用煤炭作燃料。只要下雨就下酸雨,对该镇环境造成极大破坏。

(1)分析该地区下酸雨的原因____________________________。

(2)举一例说明酸雨对环境造成的危害__________________。

(3)该地区某中学环保小组提出了治理酸雨的下列措施,你认为其中不妥的是__________。

A.将硫酸厂搬离该地区 B.建议环保部门限令整改 C.将硫酸厂排出的废气中的二氧化硫处理后排放 D.工厂和居民改用较清洁的燃料

(4)可用熟石灰来处理硫酸厂排出的酸性废水,处理原理的化学方程式是______________。

答案

(1)排放二氧化硫废气,用煤作燃料

(2)酸化土壤,腐蚀、破坏森林植物,腐蚀建筑物(答案合理,答出一点即可)

(3)A

(4)“略”

阅读理解

A teacher stood in front of his history class of twenty students just before handing out the final exam. His students sat quietly and waited for him to speak.

“It’s been a pleasure teaching you this term,” he said. “You’ve all worked very hard, so I have a pleasant surprise for you. Everyone who chooses not to take the final exam will get a ‘B’ for the course.”

Most of the students jumped out of their seats. They thanked the teacher happily, and walked out of the classroom. Only a few students stayed. The teacher looked at them. “This is your last chance,” he said. “Does anyone else want to leave?” All the students there stayed in their seats and took out their pencils.

The teacher smiled. “Congratulations (祝贺),” he said. “I’m glad to see you believe in yourselves. You all get A’s.”

小题1:This story most probably took place       .

A.at the beginning of the term

B.in the middle of the term

C.at the end of the term

D.at the beginning of the school year小题2: Most of the students got Grade ______.

A.‘A’

B.‘B’

C.‘C’

D.‘F’小题3:Why did some students stay in their seats?

A.Because they wanted to take the exam.

B.Because the teacher told them to stay in their class.

C.Because they were afraid to leave.

D.Because they didn’t have anything to do.小题4: The teacher gave the students who stayed in the classroom A’s because ______.

A.the teacher liked them

B.they were cleverer than the other students

C.they believed in themselves

D.they studied hard小题5: The underlined word “them” in Paragraph 3 refers to “______”.

A.students staying in their seats

B.students leaving the classroom

C.their seats

D.all the students

单项选择题