问题 填空题

在硫酸铜、碳酸氢铵、大理石、活性炭四种物质中,可用作建筑材料的是______,可用于制波尔多液的是______,可用作化肥的是______,可用作冰箱除臭剂的是______.

答案

在硫酸铜、碳酸氢铵、大理石、活性炭四种物质中,可用作建筑材料的是大理石,而硫酸铜可以和熟石灰混合而制得波尔多液作为杀菌剂,碳酸氢铵中含有氮元素是常用的化肥,活性炭具有疏松多孔的结构,具有吸附性,所以可以作为冰箱除臭剂.

故答案为:大理石;硫酸铜;碳酸氢铵;活性炭.

阅读理解

In the big cities of Europe and America — London, Paris, New York, people are moving out of the city. They are usually rich families with much money, and they want to live a quieter life. They are tired of the noises and the dirty air of the city, tired of the crowded streets, crowded trains and buses. They don’t want to sit in traffic any more. They want a house with a garden, and clean air that is not polluted.

So they move out. Some don’t move very far, just a little way out of the city, to the towns near the cities. Other people move to real countryside, with sheep, cows and horses, and green fields! There, they start new lives and try to make new friends.

Not all those who move from the city to the countryside are happy. After two or three years, many people feel that it was a big mistake. There isn’t much to do. Country people are very different and aren’t always friendly.

As a result, quite a lot of people move back to the city. “It’s wonderful to see crowds in the streets and cinema lights,” they say. “I’m so glad I’m back in the city!” (203)

小题1:Some city people move out of their city because of _____.

A.crowds and pollution

B.friendly neighborhoods

C.making money

D.cows and sheep小题2:Why do some people move back to the city again? Because _____.

A.they can breathe fresh and clean air

B.there are big shops and cinema lights

C.they still want to live their city life

D.they can make many new friends小题3:Which of the following sentence is wrong according to the passage?

A.Many people love their city’s colorful life.

B.They enjoy seeing animals in the country.

C.All the people move out far from the city.

D.Sometimes country people are not friendly.

单项选择题