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In a class of 50 students, 18 play basketball, 22 ......
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If $$xy\neq0 $$and $$=(\frac{1}{4})y$$, then the r......
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Reversing a decade-long trend on global _____, ear......
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The pupil had a reputation for obduracy, but the t......
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According to the passage, it is believed that ocea......