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  3. What is mainly talked about in this news item? [originaltext] The dangers of

What is mainly talked about in this news item? [originaltext] The dangers of

游客2024-08-08  34
问题 What is mainly talked about in this news item?
The dangers of smoking tobacco have been well documented since the 1960s. For years, health experts have also warned about the dangers of second-hand smoke-breathing in other people’s cigarette smoke. Now, some researchers are sounding the alarm over what they call "third-hand smoke". Third-hand smoke is the tobacco contamination that remains after a cigarette is extinguished. Dr. Jonathan Winickoff of Harvard University has been studying it.
选项 A、The dangers of smoking.
B、The dangers of second-hand smoke.
C、The dangers of third-hand smoke.
答案 C
解析 本新闻由吸烟的危害和吸二手烟的危害引出third-hand smoke这个概念，然后解释了它是什么，谁在研究它，所以，整段新闻的重点在the third-hand smoke。
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