单项选择题

Researchers at Children's Hospital of Pittsburgh announced they had discovered ______ evidence that a virus is involved in what used to be called juvenile diabetes.

A．incessant
B．compelling
C．identical
D．problematic
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单项选择题
The flower under the sun would ______ quickly without any protection.
A．wink
B．withhold
C．wither
D．widower
单项选择题
Nobody knew how he came up with this ______ idea about the trip.
A．weary
B．twilight
C．unanimous
D．weird
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