【单选题】A survey was carried out on the death rate of new-born babies in that region, ______ were surprising.
A．as results
B．which results
C．the results of it
D．the results of which
【单选题】A survey was carried out on the death rate of new-born babies in that region, ______ were surprising.
A．as results
B．which results
C．the results of it
D．the results of which
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