A survey was carried out on death rate of new-born babies in that region, ______ were surprising.
A、
the results of it
B、
the results
C、
the results of which
D、
which results
【正确答案】
C
【答案解析】
非限制性定语从句，用which引导。which代指的是survey，所以应为the result of which。
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