阅读理解 Every object has weight. But the center of its weight is not always in the middle of the object. If the top of an object is heavier than its bottom, -九年级英语 |
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[db:作者] 2019-11-12 00:00:00 零零社区 |
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题文
阅读理解 |
Every object has weight. But the center of its weight is not always in the middle of the object. If the top of an object is heavier than its bottom, it will fall over easily. We say that its center of gravity(重力) is high. But if the bottom is heavier, it won't fall easily. Then we say that its center of gravity is low. Look at the first picture. This empty box must fall over, because its center of gravity (C) is not above the line of its bottom (AB). Now look at the second picture. There are some heavy things in the bottom of this box. It will not fall, because its center of gravity is above its bottom.
1. Box _____________will not fall..
2. The main idea of the passage is _________. A. why things fall over B. a low center of gravity C. a high center of gravity D. that everything has weight |
题型:阅读理解 难度:中档
答案
据专家权威分析,试题“阅读理解 Every object has weight. But the center of its we..”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
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http://www.00-edu.com/html/201911/1735660.html十二生肖十二星座
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