单项选择题

A．its
B．his
C．their
D．our
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单项选择题
A．thereforeB．howeverC．thoughD．thereby
A．therefore
B．however
C．though
D．thereby
单项选择题
A．proposalB．suggestionC．appraisalD．consideration
A．proposal
B．suggestion
C．appraisal
D．consideration
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