单项选择题

FAUNA: ANIMALS ::

A． flora: plants
B． vegetation: aboriginals
C． fowl: amphibians
D． livestock: oxen
E． department: professors
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单项选择题
Scientists have ------- for years that turbulence within the gaseous clouds found throughout the Milky Way stymies star formation, but some of the forces behind this disturbance remain -------.
A． doubted... insufferable
B． posited... unknown
C． argued... relative
D． assumed... exoteric
E． conveyed ... insuperable
单项选择题
CARESS:AFFECTION::
A． flush: decency
B． salute: respect
C． collapse: ennui
D． obstruct: quandary
E． apprehend: dread
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