单项选择题


A．deliver
B．remove
C．transport
D．delete
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单项选择题
A．thatB．whichC．whereD．as
A．that
B．which
C．where
D．as
单项选择题
Many important scientific discoveries are in fact _________ones as they were made by chance.
A．relative
B．temporary
C．subordinate
D．accidental
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