单项选择题

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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单项选择题
All the key words in the article are printed in ______ type so as to attract readers' attention.
A．dark
B．dense
C．black
D．bold
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