问题 填空题

可用下列图示装置制取少量乙酸乙酯(酒精灯等在图中均已略去)。

实验中加热试管a的目的是①();②()。

答案

参考答案:加快反应速率 及时将产物乙酸乙酯蒸出,以利于平衡向生成乙酸乙酯的方向移动

完形填空

Nowadays many parents would like to buy whatever their children like. If they go on doing this, their children will probably think that money is    to make. They will spend the money at random(随意地)and won’ t think of their parents’ hard    

Some parents like to hold birthday parties for their children. If they     on doing this, their children will think it is necessary for them to enjoy birthday parties every year . Year after year, maybe they will       their parents’ birthdays and only remember their own’s.

Many parents don’t let their children     the housework. They think that children just have       thing to do. They should study hard and do    in their lessons. If parents go on with this, the children will not be able to take good care of     when they grow up. Parents should teach their children to do some simple housework       washing clothes and doing some cooking      it can help the children live a better life in the future.

小题1:A. easy   B. hard        C. free     

小题2:A. job         B. work      C. study

小题3:A. make       B. let         C. keep

小题4:A. remember   B. forget      C. leave

小题5:A. do        B. did       C. doing

小题6:A. one       B. two       C. three

小题7:A. good       B. well      C. more

小题8:A. herself   B. himself    C. themselves

小题9:A. as if         B. as such    C. such as

小题10:A. though   B. because    C. so

填空题