单项选择题

The scientists have absolute freedom as to what research they think it best to_______.

A．engage
B．devote
C．seek
D．pursue
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单项选择题
The woman is going to the_______.
A．library.
B．theatre.
C．research institute.
D．laboratory.
单项选择题
A．aboutB．ofC．withD．by
A．about
B．of
C．with
D．by
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