问题:
[不定项选择题]
第三篇Global Cancer Rates to Rise by 50% by 2020The number of new cancer cases worldwide is expected to increase by 50%by the year 2020.But a new report suggests that as many as a third of new cancers co
A、50% of new cancers.
B、33% of new cancers.
C、12% of new cancers.
D、80% of new cancers.
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