有这样一个等式： 90%×90%×90%×90%×90%×=50%。这个等式告诉我们，一项工作做到90%己经“很不错”了，但经过环环相扣的一系列过程后，“很不错”的90%最终带来的结果可能是一个不及格的分数和．这就是“过程控制效应”。这启示我们

A．主要矛盾在事物发展过程中处于支配地位

B．要抓住时机，实现事物的质变

C．要立足整体，发挥整体的统率作用

D．要注意系统内部结构的优化趋向

词汇运用。用括号内所给词的适当形式填空。（每空不限一词）

1. Who is ______ (healthy), Tom, Jack, or David?

2. The children are looking forward to ______ (ski) with their parents.

3. The clothes and shoes are the ______ (run).

4. Daniel likes sports, Nick is a little ______ (sport) than him.

5. I remember ______ (see) you somewhere in Nanjing.

6. Do you know the ______ (long) of the river.

7. Cows' ______ (stomach) are far bigger than sheep's.

8. They were very tired because of the ______ (please) trip.

9. What makes you ______ (think) he is a fool.

10. Simon and Linda looked at each other. They kept their secret to ______ (they).