“Try to stand as much as you can,”Dr.Katzmarzyk said.“Typically when you’re on the telephone you can stand and use the speakerphone.Instead of emailing someone in the office,just get up and go to talk to them.” However,Dr.Katzmarzyk added,standing shouldn’t be an alternative to exercising,but an alternative to sitting.“Several studies show that when you’re sitting,your leg muscles are completely inactive,”he said.“When you’re sitting and completely inactive,this is when you run into trouble managing blood glucose(血糖).”
【语篇导读】新的研究表明,久坐会缩短一个人的寿命,给你的健康带来威胁。
Whatisthemainideaofthefirstparagraph?
A.WatchingTVtoolongcanworsenourmentalhealth.
B.Weshouldbeactiveandgiveupsmoking.
C.Sittingfortoolongadaycanshortenone’slife.
D.Smokingtoomuchcanbeharmfultohealth.
答案:C
解析:段落大意题。根据第一段第一句中的“Sittingformorethanthreehoursadaycandecreaseaperson’slifeexpectancy(预期寿命)bytwoyears...”可知,答案为C项。
33.The researchers draw the conclusion on the effect of sedentary behavior by .
A.making comparisons B.telling stories
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。
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