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”

选择题
阅读理解

阅读理解。

     How do you know if your home is an easy aim for thefts (偷窃)? Around the holidays, many families don't

consider taking proper measures to prevent their homes from suffering holiday thefts. With just a few simple

steps, you can better make sure of the safety of your home during all of the holiday celebrations. Here are a

few tips for making it difficult to tell you are away from home. 

     ● Either have a trusted neighbor pick up your mail and newspapers, or tell your mailperson to hold your

mail until you return. Nothing says "Hey, we are not home!" like when your postbox is filled with all kinds of

mails and you have many different newspapers in your driveway. 

     ● Set several different lights in your house on random timers (随机定时器). Don't leave your outdoor lights

on all the time. Instead, put your outside lights on timers to be on during the nights. If an outdoor light remains

on for days at a time, it means that nobody is home to turn it off. 

     ● If you have pets that you are not taking with you on vacation, leave them with a friend, rather than having

someone come into your house every day to take care of them. When thefts see a neighbor or friend entering

your house every day, they will know you are not home. 

     ● Close all your curtains when you leave town. This is effective to deter possible thefts, as no one can see

what is in your house. If they don't know what there is to take, then the risk is even greater for them to break

in. 

     ● This article just has suggested a few tips to help you keep your house safe while you are on holiday.

Nothing can truly protect your home unless you have it monitored by a professional home security system.

1. What is the main idea of the passage?

A. to tell us how to prevent the thefts around the holidays.

B. to let the outdoor lights on all the time.

C. to tell us many families suffering from the thefts while they are on holiday.

D. to tell you to have your neighbor go to your house to take care of your pet.

2. If you are on holiday in other places, the lights in your house should _____.

A. be lit in an irregular way

B. be kept on all the night

C. be replaced by random timers

D. be turned on only once one day

3. To make your home is well protected, what does the writer advise you to do?

A. Have all the curtains closed

B. Stop your mail service at once

C. Turn to your close neighbors or friends

D. Equip your home with security system

4. Most of the tips mentioned in the text seem to _____.

A. be very popular with families

B. have no effect on preventing thefts

C. give a false impression on thefts

D. be a little hard to be brought into effect

5. The underlined word "deter" probably means "_____".

A. discover

B. discourage

C. surprise

D. attract