对划线部分提问。

1. She has a medium build.

    ______ _______ she _______ _______?

2. I would like green tea.

   _______ _______ you _______?

3. There are fifty students in the classroom.

   _______ _______ students are there in the classroom.

4. She usually does homework at ten o'clock.

    _______ _______ she usually do homework?

5. Tom is reading a book now.

   _______ _______ Tom _______ now?

某生产经营单位发生一般事故后，在事故调查组织未进入事故现场勘察前，该单位必须做的工作是（）。

A.派专人看护现场，任何人不得擅自移动和取走现场物体

B.因抢救伤员，必须在伤员受伤处做出标志

C.绘制事故现场图，摄影或录像

D.清理部分事故现场