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单选题 The study of Dr. Pechacek indicates that __________

A. exposure to second-hand smoke for a long time will affect one's health

B. people should consider exposure to second-hand smoke in restaurants a common thing

C. exposure to second-hand smoke even for a short time will result in heart attacks

D. there are fewer smokers in Colorado than there are in other areas

大学英语(一)(海南联盟)课程封面

学科:大学英语(一)(海南联盟)

时间:2023-05-09 10:57:12

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