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    4. There are 103 elements found in nature, are metals.

       A. most of which   B. most of them

       C. most of that   D. most which

    4. A

    4. A 解析：此处 most of which = and most of them ,意为“其中的大部分”

    题目来源：2016年周测月考直通高考高中英语必修3外研版 > 周内课时练20 Period Four Grammar & Writing

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