【題目】In the market, vegetables are sold by _______ kilogram, I mean, by _______ weight.

A. the; 不填 B. 不填; 不填

C. the; the D. 不填；the

【答案】A

【解析】試題分析：by+the+單數(shù)可數(shù)名詞:表示"以…計(jì)"時(shí).如：by the week 按周，按星期；

by+抽象名詞;如：by volume 按體積 / by weight 按重量。

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