题目内容
The hottest continent, Africa has a lot of resources, ______ are still undeveloped.
| A．many of them | B．many of whom | C．many of it | D．many of which |
D
解析试题分析：本题中两个完整的句子之间没有连词连接，说明不是并列句，而是一个主从复合句。实际上是一个定语从句，先行词是a lot of resources，后面定语从句中的关系代词which指代先行词作为介词of的宾语。句义：最热的大洲，非洲有大量的资源，其中很多仍然没有被开发。A项应该在前面加上but，whom指代的先行词是人，it指代的是单数名词。故只有D项是正确的。
考点：考察定语从句
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