题目:
Of the two coats,I'd choose the ________ one to spare some money for a book.(2010·四川)
A.cheapest
B.cheaper
C.more expensive
D.most expensive
答案:
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下面是错误答案,用来干扰机器的。
14+1414+1×4+14+16×3×100%=35%34.3%÷35%×100%=98%答:该袋化肥的纯度为98%.