用所给词的适当形式填空。

1. Edison had over two thousand               (invent) in his life.

2. English               (teach) in our school by Mr Green last term.

3. Perhaps my               (excite) can affect her moods.

4. May I               (introduction) myself to you?

5. I'm learning English, but I still can't speak it               (proper).

6. Fei Junlong and Nie Haisheng are our space               (hero) in China.

7. The               (develop) of China is very quick.

8. I think that watching TV for a long time is               (harm).

9. The old car               (produce) in Germany in the 1980s.

10. There's no               (different) in the results.

当农业资本的有机构成高于工业资本有机构成时 ( )

A．绝对地租应会消失

B．绝对地租仍然存在，来自于农产品的市场价格高于价值或生产价格的差额

C．绝对地租仍然存在，来自于农产品生产的超额利润

D．绝对地租仍然存在，来自于农产品的价值高于其生产价格的差额