What's people's opinion about third-hand smoke? A.It does put the health of young children at risk. B.It will remain harmful to children for two days. C.Its harm has been exaggerated by researchers. D.Most of the smokers know nothing about its harm.
A.It B. B.It C. C.Its D. D.Most E.
【参考答案】
D 解析：由题干中的people's opinion将本题出处定位到末段。该段第二句提到，研究发现绝大多数烟民与......