单选题

1.【阅读判断】Since 1939, numerous studies have been conducted to determine whether smoking is a health hazard. The trend of the evidence has been consistent and indicates that there is a serious health risk. Research teams have conducted studies that show beyond all reasonable doubt that tobacco smoking is associated with a shortened life expectancy.

Q: Smoking reduces one's life expectancy.

A.True

B.False

C.Not Given

正确答案：A

答案解析：该题说的是：抽烟会缩短人们的预期寿命。原文最后一句说了：烟草与人的预期的寿命缩短有关。