2016-2017学年高中英语unit5launchingyourcareersection3usinglanguage知能达标新人教版选修
6页1、Unit 5 Launching your career Section 3 Using Language .阅读理解A(2016吉林高三质检)Travel is exciting and summer is a busy period for holiday travel.Many people will travel great distances in airplanes,cars or other vehicles.Experts say people should know about other health problems that can strike when travelling by air.One of these is a condition called hypoxia(缺氧症)It results from a lack of oxygen to the brain.Experts say the body begins losing oxygen minutes after an airplane leaves the ground.The air p
2、ressure in an airplane during flight is lower than at sea level.This makes it more difficult for the body to effectively use the same amount of oxygen as it would on the ground.Fewer oxygen molecules (分子) cross the tissues (组织) in the lungs and reach the bloodstream.The result is a five to twenty percent drop in the amount of oxygen in the blood.This reduces the amount of oxygen that reaches the organs of the body.One effect of this lack of oxygen to the brain is a headache.When this happens,the
3、 heart attempts to fix_the_situation by beating harder and faster.This can make the traveller feel tired.These signs of hypoxia are not dangerous in a healthy person.But a drop in oxygen level can cause a health emergency in people with heart or lung problems.They might lose consciousness or even suffer a heart attack.Experts say that smoking cigarettes and drinking alcoholic liquids also reduce the bodys ability to use oxygen.So they suggest that people not drink alcohol or smoke cigarettes eit
4、her before or during a flight.They also say persons with heart or lung problems should seek advice from their doctors before flying.【语篇解读】本篇为科普知识类文章。旅行是一件令人兴奋的事,但同时要注意健康问题,比如说乘坐飞机时有人会得缺氧症。如重视不够,也会危及生命。1The author writes the passage mainly to _.Awarn people in airplanes of possible dangersBoffer some advice on avoiding health problemsCexplain the causes and effects of hypoxiaDadvise people not to smoke or drink alcohol【解析】主旨大意题。本文开始先阐明了缺氧症的成因,然后又说明了它对人体可能会带来的负面影响及伤害。【答案】C2According to the passage
《2016-2017学年高中英语unit5launchingyourcareersection3usinglanguage知能达标新人教版选修》由会员san****019分享,可在线阅读,更多相关《2016-2017学年高中英语unit5launchingyourcareersection3usinglanguage知能达标新人教版选修》请在金锄头文库上搜索。
高中化学实验方案的设计第一节制备实验方案设计
高中生物实验室配置
高中体育与健康课程田径必修模块单元教学方案
高中通用技术方案的构思方法-设计分析教案苏教版必修
高中生物室配置
高中信息技术网络技术应用选修模块教学评价方案
骆小学教师戏曲知识培训方案(I)
麻村小学阳光体育活动计划及实施方案
高桥小学幼小衔接活动方案
马摆小学控辍保学实施方案
金阳街道中心小学未成年人思想道德建设实施方案
龙扬小学第32个爱国卫生月活动方案
魏家井联小学度控辍保学工作方案
高区第九届初中骨干教师课堂教学能力展示活动
长沙县2018年度小学生课外阅读知识竞赛及书目
阳江中心小学一月一事之五月主题活动方案
长营小学校园体育活动实施方案
高考历史备考方案-陈军
高考语文第5课父亲课前预案苏教版选修现代散文选读
高考语文第9课铃兰花课前预案苏教版选修现代散文选读
2023-07-06 3页
2023-11-01 3页
2023-07-27 13页
2022-10-18 25页
2023-04-22 9页
2023-12-27 8页
2023-07-04 1页
2024-02-05 10页
2023-12-29 4页
2023-02-16 7页