The analysis comes just two years after Australian researchers found that people who said thy watched TV for more than four hours a day were 46% more likely to die of any cause than people who said they spent less than two hours a day watching TV．Thoe watching TV more than four hours a day were also 80% more likely to die of cardiovascular （心血管的） disease．"Sedentary （久坐的） behavior is something we need to pay attention to, beyond telling people to get 30 minutes of activity a day ,”said Peter T．Kazmaezyk． one of' the lead researchers． But while the evidence of inesses is increasing, it remains difficult for many people to find time to get on their feet, especially if they do desk jobs．

　　"Try to stand as much as you can," Dr．Katzmarzyk said．"Typically when you're on the telephone you an stand and use the speakerphone Instead of emailing someone in the office, just get up and So to talk to them．" However, Dr．Katzmarzyk added, standing shouldn't be an alernative to exercising, but an alternative to sitting．"Several sudies show that when you're sitting, your leg muscles are completely inactive," he said． "When you're stting and completely inactive, this is when you run into trouble managing blood glucose （血糖）．"

　　29．What is the main idea of he first paragraph?

　　A．Watching TV too long can orsen our mental health．

　　B．We should he active and give up smoking．

【2017届黑龙江省大庆市高三英语一轮阅读理解训练（6）及答案】相关文章：

★ 2017届高考英语二轮复习大题冲关秘籍语法填空：考纲解读（含解析）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (74)

★ 安徽省淮南市2014高考英语一轮单项选择及文章训练（23）及答案

★ 贵州省贵阳市2014高考英语（新人教版）一轮阅读训练（20）附答案

★ 浙江省湖州市2014高考英语阅读理解一轮（暑假）精炼（12）含答案

★ 2017高考四川省广安市英语阅读理解一轮系列训练：21（含解析）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (57)

★ 重庆市2014高考英语阅读理解一轮（精品）训练题（20）附答案

★ 浙江省湖州市2014高考英语完形填空一轮（暑假）精炼（12）含答案

★ 【三维设计】2017届高考英语（江苏专用）二轮复习阅读理解解题技法示范课件：4