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jump any higher because the earth pulls you hard. The pull of the earth is called gravity.
You can easily find out the pull of the earth. If you weigh yourself, you will know how much gravity
is pulling you.
Since there is gravity, water runs down hills. When you throw a ball into the air, it falls back down.
Because of gravity, you do not fall off the earth as it whirls (旋转) around.
Then, can we get away from the earth and go far out into space? Now you can do it, because
spaceships have been invented. Then the spaceship will go so fast that it can escape (逃出) the earth's
gravity and carry you into space.
( )1.The weight of the earth is called gravity.
2. A good high-jumper can jump three meters off the ground, can't he?
____________________________________________________
3. If the earth's gravity becomes smaller, will you become heavier or lighter?
____________________________________________________
4. Why can a spaceship escape the earth's gravity?
____________________________________________________
5. Put the underlined sentence in the passage into Chinese.
____________________________________________________
| 完形填空。 | |||
| Even if you are a good high-jumper, you can jump only about seven __1__ off the ground. You cannot jump any higher because the earth __2__ you hard. The pull of the earth is__3__ gravity (引力). You can easily __4__ out the pull of the earth. If you weigh __5__ , you will know how__6__ gravity is pulling you. Since there is gravity, water runs downhill. when you__7_ a ball into the air, it falls back down. Because of gravity, you do not fall off the earth __8__ it turns around. Then, can you get __9__ from the earth and go far out into space? Now you can do it, because spaceships have been invented. The spaceship will go fast that it can get rid of (除掉) the earth's gravity and __10__ you into space. | |||
| ( ) 1. A. kilometer ( ) 2. A. pulls ( ) 3. A. said ( ) 4. A. find ( ) 5. A. myself ( ) 6. A. much ( ) 7. A. fly ( ) 8. A. as ( ) 9. A. off ( ) 10. A. get |
B. foot B. push B. called B. look B. yourselves B. many B. throw B. and B. away B. bring |
C. feet C. makes C. told C. saw C. you C. heavy C. get C. because C. lost C. carry |
D. kilometers D. hits D. spoken D. watch D. yourself D. long D. make D. or D. left D. throw |
阅读理解
Even if you are a good high-jumper, you can jump only about seven feet off the ground. You cannot jump any higher because the earth pulls you hard. The pull of the earth is called gravity.
You can easily find out the pull of the earth. If you weigh (称体重) yourself, you will know how much gravity is pulling you.
Since there is gravity, water runs downhill. When you throw a ball into the air, it falls back down. Because of gravity you don't fall off the earth as it whirls (旋转) around.
Then, can we get away from the earth and go far out into space? Now you can do it, because spaceships have been invented. The spaceship will go so fast that it can escape (逃离)the earth's gravity and carry you into space.
(1) In this passage (文章), the word “gravity” means
[ ]
A. the pull of everything
B. the force (力) which attracts (吸引) the earth towards us
C. the force of attraction among things
D. the force which attracts things towards the center of the earth
(2) When you slip (滑倒)on something, you
[ ]
A. always fall down to the ground
B. sometimes fall down to the ground
C. go up into the air
D. often fall off the earth
(3) Gravity is so strong that ________
[ ]
A. it can't make you throw a ball into the air
B. it can keep everything on the earth
C. you can jump at least seven feet high
D. you can't go up into the air by spaceship
(4) Because of “gravity ”,________
[ ]
A. water flows (流) everywhere
B. we can go everywhere by ship
C. water flows downwards on the earth
D. water flows at the foot of hills
(5) We can get away from the earth by spaceship because
[ ]
A. the spaceship goes very fast
B. the earth has no gravity to the spaceship
C. the spaceship has a strange energy (能量)
D. the spaceship can go higher than any other thing on the earth
查看习题详情和答案>>阅读理解
Even if you are a good high-jumper, you can jump only about seven feet off the ground. You cannot jump any higher because the earth pulls you hard. The pull of the earth is called gravity.
You can easily find out the pull of the earth. If you weigh (称体重) yourself, you will know how much gravity is pulling you.
Since there is gravity, water runs downhill. When you throw a ball into the air, it falls back down. Because of gravity you don't fall off the earth as it whirls (旋转) around.
Then, can we get away from the earth and go far out into space? Now you can do it, because spaceships have been invented. The spaceship will go so fast that it can escape (逃离)the earth's gravity and carry you into space.
(1) In this passage (文章), the word “gravity” means
[ ]
A. the pull of everything
B. the force (力) which attracts (吸引) the earth towards us
C. the force of attraction among things
D. the force which attracts things towards the center of the earth
(2) When you slip (滑倒)on something, you
[ ]
A. always fall down to the ground
B. sometimes fall down to the ground
C. go up into the air
D. often fall off the earth
(3) Gravity is so strong that ________
[ ]
A. it can't make you throw a ball into the air
B. it can keep everything on the earth
C. you can jump at least seven feet high
D. you can't go up into the air by spaceship
(4) Because of “gravity ”,________
[ ]
A. water flows (流) everywhere
B. we can go everywhere by ship
C. water flows downwards on the earth
D. water flows at the foot of hills
(5) We can get away from the earth by spaceship because
[ ]
A. the spaceship goes very fast
B. the earth has no gravity to the spaceship
C. the spaceship has a strange energy (能量)
D. the spaceship can go higher than any other thing on the earth
查看习题详情和答案>>The judge asked the farmer if he had any way to weigh the butler. The farmer replied. "I am so 34 that I do not have enough money to buy anything to weigh it, 35 I do have a kind of scale(天平). " The judge asked, "Then how do you weigh the buttery" The farmer replied, "Before the baker started buying butler from 36 , I had bought bread from him. So now every time when I bring home the bread from the baker, I put it On the scale and give him the butter of the same weight,"
We 37 what we give to Others in life. Whenever you take action, ask yourself this 38 , "Am I honest?"
Honesty or dishonesty can become a 39 . Some dishonest people can lie(说谎) without a red face. Others lie so much that they do not even 40 what the truth is any more. But who is it bad for? As a matter of fact, those who lie will hurt themselves by their own dishonest behaviour.
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