单项选择题

The price of vegetables fluctuates according to the weather.

A.jumps
B.rises
C.falls
D.changes
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单项选择题
The quakes recorded during the first week of April in the area of Mount Saint Helens warned scientists of a new eruption.
A. Right
B. Wrong
C. Not mentioned
单项选择题
A new crater, which was to the south of the old one, was formed after the second eruption.
A. Right
B. Wrong
C. Not mentioned
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