用所给词的适当形式填空。

1.We should learn from _______(hero).

2.I would like ________(help)her teach our English class.

3.She asked me ________(make) an example of a crossword puzzle.

4.He ________ never ________(tell) me the story before.

5.The vegetables ________(eat) up by the sheep just now.

6.Look, the boy ________(tie) his shoes over there.

7.My mother ________(cook) when my father was reading newspaper.

8.There ________(be) a class meeting this evening.

9.My father often ________(drive) to work.

10.Danny ________(live) in China for three years.

飞机在y方向上的“过载”是指（）.

A、飞机升力与飞机重力的比值

B、飞机升力与飞机阻力的比值

C、飞机推力与飞机阻力的比值

D、飞机升力与飞机推力的比值