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What is the substance in cigarettes that cause

2022-08-01 22:47:23 问答库 阅读 168 次

问题详情

What is the substance in cigarettes that causes cancer?
A.Cigarette ashes.
B.Nicotine.
C.Tar.
D.Not mentioned here.请帮忙给出正确答案和分析,谢谢!

参考答案

正确答案:C

考点: