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精彩回答
To improve the quality of our products, we asked for suggestions______ had used the products. [ ]
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某溶液中加入硝酸银溶液生成白色沉淀 说明原溶液中有Cl-对吗?
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党的十一届三中全会以来,由于我们坚持以经济建设为中心,从而使我国经济建设上了一个大台阶,人们生活上了一个大台阶,综合国力上了一个大台阶。
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We need to buy a new car. This old car won't _____ for very long. [ ]
1年前
Can you _____ me to play basketball?
1年前