单项选择题

The weatherman broadcasts the ______ in temperature twice a day.

A．diversion
B．variety
C．variation
D．modification
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单项选择题
This blue flower is known by ______ names in other parts of England.
A．separate
B．various
C．diversified
D．plentiful
单项选择题
As the mountains were covered with a ______ of cloud, we couldn't see their tops.
A．coating
B．film
C．veil
D．shade
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