问题 问答题

化学知识与生活联系密切.请用下列物质的数字序号填空.

①食盐 ②小苏打 ③硫酸铜 ④熟石灰⑤甲烷

(1)可用做燃料______

(2)改良酸性土壤______

(3)腌制鱼肉等常用的调味品______

(4)配制波尔多液的盐______

(5)治疗胃酸过多______.

答案

(1)甲烷燃烧能够放出大量的热,可以用作燃料.

故填:⑤.

(2)熟石灰可以用来改良酸性土壤.

故填:④.

(3)腌制鱼肉等常用的调味品是食盐.

故填:①.

(4)硫酸铜可以用来配制波尔多液.

故填:③.

(5)小苏打是碳酸氢钠的俗称,水溶液显碱性,可以用来治疗胃酸过多.

故填:②.

阅读理解

阅读理解。

  A man went to buy a piece of meat. As he didn't know how to cook meat, he asked the butcher

(屠夫) to tell him the way of cooking it. The butcher told him how to cook it, "But I can't remember your

words," the man said. "Will you please write them down for me?" The butcher was kind enough to write

them down for him. The man went home happily with the meat in his hand and the note (字条) in his

pocket (口袋). A dog followed him on the way. It jumped at him, took the meat away and ran off. The

man stood there, not knowing what to do. Then he laughed and said, "never mind. You don't know how toeat it. The note is still in my pocket."

1. The man went to buy a piece of meat in _______.

A. restaurant      

B. shop      

C. butcher's      

D. chemist's

2. Why did the man asked the butcher to tell him the way to cook meat?

A. He wasn't good at cooking meat.

B. He can't cook meat very well.

C. He didn't know how to cook meat.

D. He didn't know how to eat meat.

3. In order to (为了)remember what the butcher said, he asked the butcher _______.

A. to say it once again.          

B. to teach him again.

C. to show him how to cook it.    

D. to write it down for him.

4. What happened in the end?

A. He forgot to cook the meat.

B. The dog took the meat away.

C. He taught(教)the dog how to eat the meat.

D. The note is still in his pocket.

5.What do you think of the man?

A. He was afraid of dogs.

B. He loved dogs very much.

C. He was a very foolish(愚蠢的)man.

D. He didn't know how to do things.

多项选择题