Living in the central Australian desert has its problems, _______ obtaining water is not the worst. ( 章节：1 难度：4)
- A、for which
- B、to which
- C、of which
- D、in which
正确答案:C
答案解析:有
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Living in the central Australian desert has its problems, _______ obtaining water is not the worst. ( 章节：1 难度：4)
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