单项选择题

A) but C) however
B) whereas D) while

A．but
B．whereas
C．however
D．while
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单项选择题
A) effects C) influences B) motivates D) inspires
A．effects
B．motivates
C．influences
D．inspires
单项选择题
A) evaluations C) guess B) estimates D) calculations
A．evaluations
B．estimates
C．guess
D．calculations
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