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.

Papaveraceae药用植物中普遍含有生物碱。