阅读理解。
Mr. Green comes from U.S.A. He works in Beijing. He teaches English in a middle school. And he
studies Chinese in an evening school. He can read and write a little Chinese now. He has many Chinese
friends in Beijing. They are very friendly.
He has two children. One is a girl, and the other is a boy. They study in Beijing but they are in
different grades. Their mother is an English teacher, too. They all like China. They like Chinese food
very much.
1. Mr. Green is _____. But he works in _____.
A. teacher; U.S.A.
B. American; China
C. America; Beijing
D. teacher; China
2. He _____ English in a middle school and _____ Chinese in Beijing.
A. teaches; learns
B. learns; teaches
C. learns; learns
D. teaches; teaches
3. He can write _____ now.
A. no Chinese
B. a little Chinese
C. Chinese very well
D. good Chinese
4. His children _____ students in a middle school in _____.
A. are; Beijing
B. aren't; China
C. are; U.S.A.
D. aren't; Beijing
5. His wife teaches English in _____, too.
A. Chinese
B. Beijing
C. U.S.A.
D. middle school
所表示的原子是 。其单质最硬的元素为 。