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【简答题】
Every day, in all kinds of weather, a lot of men and women go jogging (running slowing). 小题1: 为什么慢跑这么流行呢? Most people start jogging because they hear it is a very good form of exercise. 小题2: Jogging makes the heart strong and helps people control their weight . If you keep jogging every day, 小题3: 你不必通过吃药来减肥 。Jogging can also make you feel better about yourself. Do you jog? If you do, 小题4: 一定要询求建议 。Does jogging cost much? It costs almost nothing. But it is very important to have a good pair of shoes that are made for jogging. 小题5: If not, when you run on hard ground for a long time, it may cause your feet to hurt.
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A.
NaOH
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Na 2 O
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Na 2 SO 4
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Na 2 CO 3
【单选题】掌握物质的分类是学好化学的基础,指出下列物质中属于碱的是 (    )
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KOH
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NaCl
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Cu
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. NaCl
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肝肾隐窝
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直肠膀胱陷凹
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6
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HCl
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MgO
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4
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7
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5
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6
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