题文

阅读理解。

When you run downhill, gravity pulls you. When you throw a ball up, gravity pulls it down. When you sit, gravity holds you down. When you lie down, gravity holds you to the bed.      We know gravity is everywhere even though we can't see it.We know it pulls on every stone and every drop of water. It pulls on everything.      The gravity of the earth pulls everything towards the center of the earth.You know this when you try to lift a heavy stone. Gravity pulls it down. The more the stone weights, the more gravity pulls on it. To lift the stone, you must pull up harder than gravity pulls down.      The earth has gravity and the moon also has gravity. The moon has less gravity than the earth has. This means the moon's gravity does not pull as hard as the earth's gravity.      Do you weigh 60 kilograms? That means the pull of the earth's gravity on you is 60 kilograms. If you were on the moon, you would weigh only 10 kilograms. The pull of the moon's gravity on you would be only 10 kilograms.

1. The word "gravity" in the passage means "______" in Chinese.

[     ]

A. 物体质量 B. 物体重量 C. 万有引力 D. 宇宙能量

2. Gravity ______.

[     ]

A. pulls on everything high up B. is everywhere C. can be seen everywhere D. pushes on everything

3. You can't lift up a big stone because ______.

[     ]

A. more gravity pulls it down B. you don't know how to do it C. you are not strong D. gravity is out of the stone

4. If you weigh 50 kilograms, that means ______.

[     ]

A. you can lift up 50 kilograms of things B. the earth's gravity on you is less than 50 kilograms C. you can lift up more than 50 kilograms of things D. the earth's gravity on you is 50 kilograms

5. If a stone weighs four kilograms on the moon, it weighs            .

[     ]

A. 10 B. 24 C. 40 D. 60

题型：阅读理解  难度：偏难

答案

1-5: CBCDB

据专家权威分析，试题“阅读理解。 When you run downhill, gravity pulls you. When y..”主要考查你对  科教类阅读  等考点的理解。关于这些考点的“档案”如下：

科教类阅读

考点名称：科教类阅读

• 科普类的阅读：
  科普类的阅读理解包含介绍科学知识、社会知识的短文。阅读这类短文时，要以事实为中心进行思考，抓住事物的特征、用途、相互关系等。
  如果是介绍社会现象的文章，要掌握所谈现象的内涵。

• 答题技巧：
  1. 加强整体意识，把握文章的主要内容。在阅读的时候可给段落标上序号，并给重要的句子和
     关键词做上记号，尤其是各段中心句，为答题提供更快捷更多的信息源。
  2. 审清题干，发觉和把握试题中有效的提示性信息，确认命题的角度、阅读范围和答题方式。
  3. 定位阅读，强化对应意识。同时要注意原文利用和自我加工相结合。