单项选择题

She remains confident and ______ untroubled by our present problems.

A．indefinitely
B．infinitely
C．optimistically
D．seemingly
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单项选择题
Ever since the rise of industrialism, education has been ______ towards producing workers.
A．harnessed
B．hatched
C．motivated
D．geared
单项选择题
Sick ______ she was, she has to prepare food for the whole family.
A．although
B．as
C．because
D．for
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