A: 热水袋用水来取暖
B: 夏天中午洒水车洒水降温
C: 初春夜晚要向稻田中灌水
D: 城市建造人工湖来调节气温
________Tom________ Mary speaks good Chinese, so they can talk with these Chinese students very well.
“种瓜得瓜,种豆得豆”这种现象主要取决于下列哪一结构( )
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