There is as a free dinner in this world, as the saying goes, “No pains, no gains.”A. no s

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A. no such a good thing
B. such no good thing
(答案→)C. no such good thing
D. such no a good thing
解析：考查such和so的用法。Such后面接名词或者名词性短语；so后面接形容词或者副词；在有些情况下such和so的用法是可以互换的。如so good a student=such a good student;句意：世界上没有免费的午餐，正如谚语所说：一份耕耘，一份收获。故C正确。