题目内容
【题目】Vitamin C helps our bodies make a special chemical, which __________ affects our brains, making us feel happy.
A. in all B. in turn
C. in advance D. in short
【答案】B
【解析】句意:维生素C可以帮助人体产生一种特殊的化学物质,这种化学物质反过来又影响我们的大脑,使我们快乐。in all总共,总计;总之;in turn依次地,轮流地;转而,反过来;in advance预先,提前;in short总之;简言之。
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