标题: pp语法一道，请教高手！ [打印本页] 作者: IcePoint 时间: 2003-10-30 13:06 标题: pp语法一道，请教高手！ Although copper was hammered into tools and ornaments by some early inhabitants of North America, the smelting and casting of copper were unknown between them.
答案D，很容易看出。 请教修改方法。作者: monicar 时间: 2003-10-30 13:20
among作者: lucyyyh 时间: 2003-10-31 11:38
同意monicar的修改. them 指代early inhabitants of North America, 所以between -----> among.作者: IcePoint 时间: 2003-10-31 12:03
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