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【简答题】

Passage 4 Mr. King is a tall and strong man. He teaches P. E. in a middle school. He wears a long beard (胡子) and takes good care of it. It was Sunday yesterday. There was a big football match of the year on the playground in the center of the city. Mr. King likes the very much and of course he was going to watch it. With his friends’ help he got a ticket a few days ago. After breakfast he hurried to the bus stop, but a lot of people were waiting there. A bus came and he hardly got on. There were plenty of people in it and it was difficult for them to put their feet. He had to grip (抓住) the back of a chair. At the next stop a boy got on the bus. He looked around and saw Mr. King ’ s beard and grip it. The man found it at once and called out, “ Let go of (松开) my beard, boy! ” “ Are you going to get off, sir?” asked to boy.

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题目标签:松开
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参考解析:
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刷刷题刷刷变学霸
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【单选题】用手将一个木球放入水中某一深度后,松开手,木球上浮,在木球未露出水面的时候,下列说法中正确的是[ ]

A.
木球所受的重力、浮力都不变
B.
木球所受的重力不变,浮力变大
C.
木球所受的重力、浮力都变小
D.
木球所受的重力不变、浮力逐渐变小