树种间相互作用的方式有机戒作用方式、（）、（）、生理生态作用方式和（）。
参考答案：
生物作用方式、生物化学作用方式，生物物理作用方式
用 about, aside, down, out, off, up等介词或副词填空。
1. They set _ . to knit a sweater but in the end it became a vest.
2. They set _ on a sightseeing tour.
3. He set his homework right after supper.
4. I've set _ some money for my old age.
5. I set _ everything that happened.
6. The man set for work at 5 o'clock.
7. A new government was set after the civil war.
全世界最大的石佛像在（）。
A．四川乐山
B．河南洛阳
C．四川屏山
D．四川江津
