【语篇导读】新的研究表明,久坐会缩短人的寿命,给人们的健康带来威胁。
9.What is the main idea of the first paragraph?
A.Watching TV too long can worsen our mental health.
B.We should be active and give up smoking.
C.Sitting for too long a day can shorten one’s life.
D.Smoking too much can be harmful to health.
答案:C
解析:段落大意题。根据第一段第一句中的 “Sitting for more than three hours a day can decrease a person’s life expectancy(预期寿命) by two years” 可知,答案为C项。
10.The researchers draw the conclusion on the effect of sedentary behavior by .
A.making comparisons B.listing figures
C.giving examples D.classifying facts
答案:A
解析:细节理解题。作者在第二段用数据比较的方式说明了久坐和人的寿命之间的关系,故选A项。
11.What does Dr.Katzmarzyk think of sedentary behavior?
A.It warns people to exercise 30 minutes a day.
B.It’s a bad behavior worth considering seriously.
C.It can lead to death at once.
D.It is good for desk job workers.
答案:B
解析:推理判断题。依据文章第二段中Dr.Katzmarzyk所说的话及最后一段中的 “your leg muscles are completely inactive和this is when you run into trouble managing blood glucose(血糖)” 可知,Dr.Katzmarzyk认为久坐对身体不利,我们应认真对待这个坏习惯。故选B项。
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