实现“一国两制”前提是（）。
A.坚持一个国家，两个政府
B.坚持公有制和按劳分配
C.坚持一个中国即中华人民共和国
参考答案：C
用所给词的适当形式填空。
1. His mother _____(kill) in an accident last month.
2. Do you need _____ (travel) and make new friends?
3. Her mother asked her _____ (help) do the cleaning.
4. The scientist goes to the fields _____ (two) a day.
5. China now produces enough rice _____ (feed) her people every year.
世界上第一台可编程序控制器是（）在1969年研制出来的。
A.美国
B.德国
C.日本
D.中国
