单项选择题


A．pressure
B．depression
C．burden
D．tension
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单项选择题
A．It estimatesB．It is estimatedC．It confirmsD．It is confirmed
A．It estimates
B．It is estimated
C．It confirms
D．It is confirmed
单项选择题
A．as well asB．in additionC．as a resultD．in sum
A．as well as
B．in addition
C．as a result
D．in sum
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