皮皮学，免费搜题
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【单选题】
上下止点间的距离称为活塞
A.
路程
B.
半径
C.
冲程
D.
行程
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【简答题】根据短文内容，选择正确答案。 One day, a little bear (熊) goes to buy something in Grandpa Hare's shop. There are some bottles of honey (蜂蜜) and many apples on the shelf. (架子) The little bear asks, 'How much is a bot...
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【简答题】用所给词的适当形式填空( 20分) 1.What are they going ___________ (buy)? 2.She ’ s on the _______ (one) floor. 3.They are going to make__ ___ (poster). 4.Alice is _________ __(read) a storybook. 5. I’ m going to vi...
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