词汇运用（共20小题，每小题1分，满分20分）
A.根据句意及所给中文提示、英文解释或首字母，写出句中所缺单词，每空限填一词。
We must prevent the ________ (蔓延)of this kind of illness.
Don’t give up your dream because of your ________(失明).
In some countries, black people don’t have the same ________ (权利) as whites.
My sister works in a company as a ________ (秘书).
We can’t finish_______（挖）such a big hole without your help.
China has the first largest population in the world. I________has the second largest population  in the world.
E________plays an important part in people’s life. A child can’t have a good future if he doesn’t go to school.
There is nothing in the box. It's e_____________.
The policeman tried to __________ (put persons or things into different groups) the men who were fighting.
The factory ________ ( cause a result ) less pollution this year because of the use of new energy.