单项选择题

In the newly discovered gene, the change of a single unit of DNA converts the worm from a solitary forager into______diner.

A． an intrepid
B． a voracious
C． a gregarious
D． a nomadic
E． a rapacious
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单项选择题
BLEMISHED: PERFECTION::
A． apathetic : emotion
B． stigmatized : stain
C． cherished : heirloom
D． callow : immaturity
E． tainted : reliability
单项选择题
Anthropologists noted that the two______ethnic groups______the same saints, worshipped in the same churches, and respected a past of shared values, despite their differences.
A． salutary… praised
B． alienated … rejected
C． dominant … isolated
D． stentorian… delineated
E． coexistent… venerated
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