下图反映的历史事件是
A．毛 * * 访问苏联
B．周恩来访问印度
C．尼克松访问中国
D．江 * * 访问美国
答案：C
The old man was taking a walk, ________ by his grandson. [ ]
A. supporting
B. supported
C. being supported
D. having supported
用所给词的适当形式填空。
1. Kangaroos are _____ (play) and chimpanzees are _____ (noise).
2. I was _____ (surprise) to find hardly anyone in the zoo.
3. Visiting zoos are like _____ (live) textbooks for young people.
4. He _____ (use) to be _____ (call) "Little Tiger".
5. Liu Xiang's success is an _____ (inspire) to us all
