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
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单项选择题
The attitude of the author is ______.
A.ironical
B.critical
C.appealing
D.militant
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