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已知函数y=1/2sinx+1/2/sinx/画出函数的简图
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你能帮帮他们吗
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A: Have you heard of a big fire on May Day? B: Not yet. When and where did the fire happen?
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笔记本5元/本,钢笔7元/支,某同学购买笔记本和钢笔恰好用去100元,那么最多可以购买钢笔________支.
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Put the old newspapers here,and they will be __________ to produce other things.
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Which of the following sennces doesn't have a liaison(连读)?
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