问题
选择题
True friendship is like sound health, ________ the value is seldom known until it is lost.
A．from which
B．which
C．of which
D．whose
答案
答案：C
定语从句考查题。先行词health，关系词which做of的宾语。 友谊像健康一样直到失去才知道它的珍贵。
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