完成句子。 

1. There're two apples here, you can take ______ (任意一个).

2. Lisa has two daughters. ______ (没有一个喜欢) traveling.

3. ______ (所有的) girls like singing.

4. To say is ______ (一回事), to do is ______ (另一回事).

5. They keep one black cat and ______ (两只黑的).

6. He has ______ (许多) money, but he has ______ (没有) friends.

7. Can she speak French? ______ (只会一点).

8. ______ (他们中很少有人) can talk in Chinese.

9. ______ (没人) has been reached farther than the moon.

10. We looked at ______ (相互) in great surprise.

如果地面净雨为两个时段，各为一个单位净雨深，则形成的流量过程的洪峰为单位线洪峰的（）倍。

A.2

B.1

C.3

D.1—2