问题 不定项选择题

用铁片与稀硫酸反应制取氢气时,下列措施不能使氢气生成速率加快的是[ ]

A.加热         

B.将稀硫酸改为98%的浓硫酸

C.滴加少量硫酸铜溶液  

D.不用铁片,改用铁粉

答案

答案:B

阅读理解

任务型阅读。

     The Spring Festival is a Chinese traditional festival.  Most of families will get together to enjoy the

Spring Festival. Before we are going to have a wonderful Spring F'estival, we always do some

preparations.         

     First, we will buy many Blew Year's goods to spend the new year, such as pork, beef, chicken, duck,

fish, apples, oranges, bananas, etc. It always cost much money to buy the New Year's goods.    

     Second, we will clean our house and other things to make them newer, such as cleaning the windows,

the bedroom, the living room, the floor, the kitchen, the bathroom, etc.    

     Third, we will call our family members to come back home as soon as possible so that we can get

together in New Year, and enjoy the New Year's Eve dinner. The family members always come back

before the New Year's Eve.    

     The last thing to do is to buy some new clothes, new shoes, cut down your hair. After finishing all these preparation, we are going to have a new year.

1.                     is the most important traditional festival in China.  

2. Before this important festival, we should buy                      to spend the New Year.  

3. We always spend                      to buy the New Year's goods.  

4. We Chinese often get together and enjoy                       .                   

5. For children, the parents always buy                      for them.

单项选择题