It is easy to determine whether smoking is hazardous. Nicotine is poisonous.

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问题 It is easy to determine whether smoking is hazardous.
Nicotine is poisonous.

选项 A、Right
B、Wrong
C、Not mentioned

答案A

解析 借助背景知识判断该句说法正确,因此推测答案可能是正确或没提到。利用题干中的 nicotine(特征词)作为答案线索词,这样直接在文章中找到答案相关词句:There is also nicotine,which is powerful poison,and black tar(焦油).该题考察考生对非限制定语从句的理解。which is powerful poison是非限制定语从句,修饰前面的名词nicotine,该从句的内容是“有着很强毒性的尼古丁”,因此判断问题句的说法正确。
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