单项选择题

New data has ______ that the damage to the ozone layer is not confined to the southern hemi- sphere.

A．ratified
B．confirmed
C．assured
D．approved
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单项选择题
Her successful jump brought a ______ cheer from the crowd.
A．spontaneous
B．homogenous
C．simultaneous
D．instantaneous
单项选择题
The attitude of the author is ______.
A．ironical
B．critical
C．appealing
D．militant
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