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?

下列成就属于智力成果的有（  ）

①袁隆平试验成功的杂交水稻             ②小明在杂志上发表了一篇文章

③农民辛勤劳作收获了丰硕果实           ④1851年辛格发明了缝纫机

A．①②③

B．①②④

C．①③④

D．②③④