同义句转换, 每空一词。  

1. She was first in the competition. 

    She ______ _______ _______ in the competition.

2. We couldn’t go there because the weather was bad. 

    We couldn’t go there _______ _______ the bad weather.

3. Sam started to learn how to swim at the age of three.

    Sam started to learn how to swim ______________ _______ three.

4. Mike is so young that he can’t go to school.

    Mike is _______ _______ _______ go to school.

5. People called him "a talented boy".

    He _______ ________ "a talented boy".  

GB/T380《石油产品硫含量测定法（燃灯法）》规定，为了使生成的二氧化硫吸收完全，灯燃尽后，盖上灯罩，经过（）后再关闭真空泵或水流泵。

A.2min～3min

B.3min～4min

C.4min～5min

D.3min～5min