What happens to most meteoroids coming into the atmosphere?

What happens to most meteoroids coming into the atmosphere? A.They bum up. B.The

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第54题应填__________

第54题应填__________ A.beautiful B.independent C.troubled D.crowded

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第42题应填__________

第42题应填__________ A.standing by B.listening to C.laughing at D.looking for

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What' s Heyman' s suggestion for parents?

What' s Heyman' s suggestion for parents? A.Teach their children about rules. B.

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表演游戏和角色游戏都是幼儿玩扮演角色的游戏,没有区别。(  )

表演游戏和角色游戏都是幼儿玩扮演角色的游戏,没有区别。(  )

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