确定项目建设规模需要考虑的政策因素有（）。

A.国家经济发展规划

B.产业政策

C.生产协作条件

D.地区经济发展规划

E.技术经济政策

用适当形式填空。

1. The book is very _____ (interest), I like it very much.

2. He _____ (watch)Tv  at  home every day (每天).

3. Let's _____  (play) computer games.

4. That _____  (sound) interesting.

5. I like playing pingpong, but I _____ (not have) a pingpong ball now.