单项选择题

She could fix the machine without referring to the instructions.

A. understanding
B. observing
C. consulting
D. obtaining
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单项选择题
I didn't have much confidence in my talent as an actor.
A. wisdom
B. gift
C. performance
D. show
单项选择题
A supernova (超新星) is a star that explodes and then slowly fades to less than its original brightness.
A. size
B. weight
C. radiance
D. importance
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