3 . Were it not for g_______, which brings them down to the earth, arrows would continue to fly forward forever in a straight line. (根据首字母单词拼写)

6 . 根据语境，从方框中选择单词并用其适当形式填空

mental     independent     procedure     intelligent     mankind     vehicle     launch disappointed     desire     signal     gravity     data     universe     determine     astronaut

1. The city was crowded with ________ people with no interest in settling down.
2. The carrier rocket sent the Shenzhou 11 spacecraft with ________ Chen Dong and Jing Haipeng into space.
3. The use of new energy ________ can reduce pressure on energy and the environment.
4. She gave me a ________ look—the kind that said she would not change her mind.
5. So far the government ________ many campaigns to protect the environment.
6. Jordan’s super skills were impressive but the ________ strength that he showed made him unique.
7. Susan is a very bright and ________ woman who can always find good ways to settle the problems she meets.
8. As we get closer to the moon, we shall feel its ________ pulling us.
9. However, according to a widely accepted theory, the ________ began with a “Big Bang”.
10. We sought ways to help disabled students to live and study ________.
11. These ________ show that most cancers are detected as a result of clinical follow-up.
12. A large number of students ________ to be admitted to Peking University.
13. In order not to be heard, she pointed her finger upwards to ________ that the teacher was coming.
14. The safety video shows the proper ________ for leaving the cinema in case of fire.
15. The computer is definitely an invention for the good of all ________.

7 . Mars has less g________ because its density (密度) is smaller than the earth. Someone who weighs 50 kilos on the earth weighs only 19 kilos on Mars! (根据首字母单词拼写)

9 . 穿着太空服的吉米看起来矮胖臃肿了一些，但他能承受月球的重力，而在地球上出生的人是无法承受这种重力的。（汉译英）