单项选择题

The flashing red light served as a （）of danger ahead.

A. predictor
B. caution
C. precaution
D. prevention

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单项选择题
Ms. Rice, with customary class, simply expressed hope that this episode wouldn’t （）the charity in spite of the previous scandal.

A. taint
B. enhance
C. sprain
D. sponsor
单项选择题
Reading（）the mind（）food is to the body

A．is for is as
B．as is as
C．is to what
D．what isis as
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