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pull than the Earth, while others have a weaker one. Jupiter, the largest 参考答案: P29
planet in our solar system, has the strongest gravity.
The Moon is smaller than the Earth, meaning its gravity is less powerful. Objects weigh less on the Moon. If you weighed 60 pounds on the Earth, you would weigh only about 10 pounds on the Moon! Because of this weaker gravity, people can jump much higher there. That's why astronauts bounce high when they walk on the Moon. If you threw a ball there, it would travel incredibly far. In a baseball game, you could easily hit a home run every time!
Some planets, like Saturn, are much larger than the Earth. Objects weigh more on these larger planets because the gravitational pull is stronger. On Jupiter, your weight would be about twice as much as it is on the Earth. Your arms would feel twice as heavy! How would it feel to throw a baseball? Skating down a hill on Jupiter, however, would be challenging, as your increased weight would make it harder to push off.
阅读短文,选择最佳选项,并结合你的想象回答问题。
(
A. Where to find gravity.
B. How to weigh an object.
C. Why the Earth has gravity.
D. What gravity and weight are.
(
A. The Earth.
B. Jupiter.
C. The Moon.
D. Saturn.
(
A. 25 pounds
B. 75 pounds
C. 225 pounds
D. 300 pounds
(
A. fall back toward the ground at once
B. fly high and drop from a great height
C. fly off into the air and not come down
D. reach a height and move around the Earth
5. 新考法 创新话题 Do you want to run on the Moon or on Jupiter? Why?
planet in our solar system, has the strongest gravity.
The Moon is smaller than the Earth, meaning its gravity is less powerful. Objects weigh less on the Moon. If you weighed 60 pounds on the Earth, you would weigh only about 10 pounds on the Moon! Because of this weaker gravity, people can jump much higher there. That's why astronauts bounce high when they walk on the Moon. If you threw a ball there, it would travel incredibly far. In a baseball game, you could easily hit a home run every time!
Some planets, like Saturn, are much larger than the Earth. Objects weigh more on these larger planets because the gravitational pull is stronger. On Jupiter, your weight would be about twice as much as it is on the Earth. Your arms would feel twice as heavy! How would it feel to throw a baseball? Skating down a hill on Jupiter, however, would be challenging, as your increased weight would make it harder to push off.
阅读短文,选择最佳选项,并结合你的想象回答问题。
(
D
)1. 主旨大意 What does Paragraph 1 mainly talk about?A. Where to find gravity.
B. How to weigh an object.
C. Why the Earth has gravity.
D. What gravity and weight are.
(
B
)2. Which has the strongest force of gravity in the solar system?A. The Earth.
B. Jupiter.
C. The Moon.
D. Saturn.
(
A
)3. If a man weighed 150 pounds on the Earth, his weight would be about 25 pounds
on the Moon.A. 25 pounds
B. 75 pounds
C. 225 pounds
D. 300 pounds
(
C
)4. According to the text, if you threw a ball and there were no gravity, it would fly off into the air and not come down
.A. fall back toward the ground at once
B. fly high and drop from a great height
C. fly off into the air and not come down
D. reach a height and move around the Earth
5. 新考法 创新话题 Do you want to run on the Moon or on Jupiter? Why?
答案
1. D 主旨大意题。根据“Gravity is what keeps you on the ground.”和“This strength is called weight.”可知，第一段主要介绍了重力和重量的概念。故选D。
2. B 细节理解题。根据“Jupiter, the largest planet in our solar system, has the strongest gravity.”可知，木星是太阳系中重力最强的行星。故选B。
3. A 推理判断题。根据“If you weighed 60 pounds on the Earth, you would weigh only about 10 pounds on the Moon!”可知，月球的重力约为地球的六分之一，一个人在地球上重150磅，意味着他在月球上为150÷6=25磅。故选A。
4. C 细节理解题。根据“Without it, you would fly into outer space!”以及文中对重力的描述可知，在没有重力的情况下，球会飞出去很远，不会掉下来。故选C。
5. 答案不唯一，例如：I want to run on the Moon. Because it would be fun to jump high and bounce around./I want to try running on Jupiter. Though it would be hard, I could challenge myself.
2. B 细节理解题。根据“Jupiter, the largest planet in our solar system, has the strongest gravity.”可知，木星是太阳系中重力最强的行星。故选B。
3. A 推理判断题。根据“If you weighed 60 pounds on the Earth, you would weigh only about 10 pounds on the Moon!”可知，月球的重力约为地球的六分之一，一个人在地球上重150磅，意味着他在月球上为150÷6=25磅。故选A。
4. C 细节理解题。根据“Without it, you would fly into outer space!”以及文中对重力的描述可知，在没有重力的情况下，球会飞出去很远，不会掉下来。故选C。
5. 答案不唯一，例如：I want to run on the Moon. Because it would be fun to jump high and bounce around./I want to try running on Jupiter. Though it would be hard, I could challenge myself.
