What is the main idea of the articleCigars:Healt
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What is the main idea of the article"Cigars:Health Effects and Trends"?
A. When it comes to cancer,cigars are not any safer than cigarettes.
B. Cigars may be addictive while cigarettes are not easily so.
C. Cigars contain less harmful substances than cigarettes.
D. Increase in cigar-smoking does not affect public health much.
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答案：A
倒数第三段中的一句话概括了文章的中心，即“...cigars are not safe alternatives to cigarettes and may be addictive."