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问题 填空题

把一个圆柱体的橡皮泥捏成与它等底等高的圆锥体，可以捏______个．

答案

根据等底等高的圆锥形的体积是圆柱形体积的

1
3
，

又因为，在捏橡皮泥的过程中，它的总体积不变，

所以，把一团圆柱体橡皮泥揉成与它等底等高的圆锥体，能捏3个，

故答案为：3．

改错题

Today we were organized for a short trip to the West Hill. We set out by the school bus at 7:30 a.m. The weather was pleasure and every one of us was excited. After   two hour’s ride, we arrived there at nine thirty. We began our programs the moment as we got off from the bus. We played games on the hillside and swimming in the river. After that we had our picnic lunch. In the afternoon we walked along the river, that winds around the hills.  We took a lot of photo and enjoyed ourselves very much. Time past quickly and we had to come back. It was over five o’clock that we returned school. What a good trip we had today! I’ll never forget it.
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判断题

气压带风带的移动规律是夏季北移，冬季南移。[ ]
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