2010年天津市中考化学试题和答案
2010年天津市初中毕业生学业考试试卷化学一、选择题(本大题共10小题,每小题2分,共20分)每小题给出的四个选项中,只有一个最符合题意。1.2009年在哥本哈根召开的世界气候大会上,各国共同协商对策,以减少温室气体排放量。2010年世界环境日的中国主题是“低碳减排•绿色生活”。利用下列能源,可以减少温室气体排放的是A.太阳能B.煤C.石油D.天然气2.下列变化中,属于化学变化的是A.滴水成冰B.酒精燃烧C.玻璃破碎D.西瓜榨汁3.加碘食盐、高钙牛奶中的“碘”和“钙”是指A.单质B.分子C.原子D.元素4.人的机体活动和维持恒定体温需要能量,下列物质主要为人体提供能量的是A.无机盐B.水C.糖...
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