C．the differences between the earth and the moon

　　D．Li Yanping, my friend, who is an astronaut

　　2．When we were going up, we felt________.

　　A．we were pressed against our seats

　　B．we were lighter than we were on the earth

　　C．as if we were flying

　　D．the rocket was shaking strongly

　　3．Why can't the spaceship fall back to the earth?

　　A．Because the moon's gravity pulls it up.

　　B．Because it is too far away from the earth.

　　C．Because the earth has no gravity.

　　D．Because the spaceship is not very heavy.

　　4．When I was on the moon I felt I was________than on the earth.

　　A．slower　　　　　　 B．heavier

　　C．cleverer D．lighter

　　答案：1～4　BABD

　　一、这样记单词

记得准·写得对 记得快·记得多 Ⅰ.基础词汇

1.climate n．　　　　　　　气候

2.pull n．&vt. 拉(力)；拖；牵引力

3.float vi.&vt. (使)浮动；(使)漂浮

n. 漂浮物

4.crash vi.& vt. 碰撞；坠落

5.satellite n. 卫星；人造卫星

6.gravity n. 万有引力；重力

7.spaceship n. 宇宙飞船

Ⅱ.拓展词汇

1.gentle adj.温和的；文雅的→gently adv.温和地

2.physicist n．物理学家→physics n．物理学→physical adj.物理的；物理学的；体力的 1.spaceship n．宇宙飞船

[记法]　名词＋名词→名词

space(太空)＋ship (船)→spaceship (宇宙飞船 )

[联想]　由spaceship想到的

①web＋site→website(网址)

②home＋work→homework(家庭作业)

③air＋line→airline(航班)

④basket＋ball→basketball(篮球)

2.physicist n．物理学家

[联想]　后缀­ist名词荟萃

①biologist 　　　　　　　生物学家

②chemist 化学家

③politician 政治家

④geologist 地质学家