Living in the central Australian desert has its problems, obtaining water is not
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Living in the central Australian desert has its problems,______ obtaining water is not the least.
A.for which
B.to which
C.of which
D.in which
试题答案
C
考查定语从句中介词与关系代词的用法。先行词为problems,此句意思为“在这些问题中获得水是最重要的”。在---中，因此选C