7.When we describe something very light, we say "as light as a 　　　　(羽毛)".　

6. Cloning is a way of making an e　　　 copy of another animal or plant.

5. I’m sorry to b　　 　you, but can you show me the way to the railway station?

4. From 1842 to 1940 Angel Island was a famous immigration station where many

Chinese people a　　　　 for right to live in USA.

3. The editor said that the book would be improved by　　　 (插入) another chapter.

2. The farmer had only twenty　　 (牛) left after the serious snowstorm on the farm.

(共15小题；每空1分，满分15分)

1. The boss needed many employees, so he decided to h　　　 some.