单项选择题

The report says that steps could be taken to reduce about

A．50% of new cancers.
B．33% of new cancers.
C．12%of new cancers.
D．80% of new cancers.
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单项选择题
According to Paul Kleihues, cancer was once regarded as
A．an incurable disease.
B．a mysterious disease.
C．a "Western" disease.
D．a world disease.
单项选择题
The risk of dying from cancer in developed countries is
A．double that in developing countries.
B．much higher than that in developing countries.
C．the same as that in developing countries.
D．much lower than that in developing countries.
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