单项选择题

If a price or amount （）, it keeps changing and becoming higher and lower.

A．tumbles
B．tilts
C．fluctuates
D．flaps

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单项选择题
As a lawyer （） for his good judgment and eloquence, he is often invited to those grand banquets and meets those distinguished people from all circles.

A．notorious
B．notable
C．nasty
D．notified
单项选择题
The clock in the painting is a symbolic （）of the passage of time.

A．presentation
B．representation
C．introduction
D．offering
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