It is said that books on popular science are in short supply.A. the; a B. /; / C. /; the D. the; the

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【题目】It is said that books on ______ popular science are in ______ short supply.

A. the; a B. /; / C. /; the D. the; the

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【答案】B

【解析】学科前不加冠词，be in short是固定搭配，表示“短缺”。