单项选择题

A．Cold and windy.
B．Snow will be replaced by strong winds.
C．It will get better.
D．Rainy and cold.
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单项选择题
E
单项选择题
According to the text, fossil studies of radiolaria are significant because they.
A．live in the depths of the ocean
B．are one-celled
C．have survived through the ages
D．demonstrates climatic changes prior to humans
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