2017届高三英语一轮检测25　Unit 5　First aid（人教版必修5）

　　课后限时自测(二十五)

　　Ⅰ.语法填空

　　It's important to learn some knowledge about first aid in our daily life.If a person has an accident they need some medical care before a doctor can be found.When __1__ give first aid，you must pay attention to three things：First，when a person __2__(stop) breathing，open their mouth __3__(see)if there is food at the back of their mouth.Secondly，__4__ a person cannot breathe，do your best to start their breathing at once，using a mouth－to－mouth way.Thirdly，if a person is hurt badly，try at once to stop the bleeding，then take them __5__ a doctor.

　　Many accidents may happen at home，all parents should know how to deal with common __6__(injure) which may happen to their children.When a child __7__(bite) by an animal，wash the wound with cold running water.When a child is burnt，wash and cool the area of the skin __8__ the cold tap for a while，__9__ then put a piece of dry clean cloth over the burn.

　　Knowing about some first aids sometimes can save __10__ person's life.

　　【语篇解读】　本文作者主要讲述懂得急救知识的重要性，并介绍了一些急救知识。

　　1．you　同主句的主语。

　　2．stops　由上下文可知用一般现在时。

　　3．to see　不定式作状语，表目的。

　　4．if　根据前后句的条件关系可知，if引导条件状语从句。

　　5．to　介词to的基本用法。

　　6．injuries　名词作宾语，根据常识要用复数。

　　7．is bitten　由句意可知用被动语态。

　　8．under　根据句意可知。

　　9．and　前后句意为顺承关系，故填and。

　　10．a　不定冠词表示“一个”。

　　Ⅱ.阅读理解

　　(2017·望城二中高三月考)Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health.This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased.Apple，for example，doesn't want iPhones to come closer to you than 1.5 centimeters；Research In Motion，Black Berry's manufacturer，recommends 2.5 centimeters.

　　If health issues arise from cell phone use，the possible effects are huge.Voice calls—Americans chat on cell phones 2.26 trillion(万亿) minutes annually－earn$109 billion for the wireless carriers.

　　Devra Davis，an expert who has worked for the University of Pittsburgh，has published a book about cell phone radiation，“Disconnect”. The book surveys scientific research and concludes the question is not settled.

　　Brain cancer is a concern that Ms.Davis examines.Over all，there has not been an increase in its incidence since cell phones arrived.But the average masks an increase in brain cancer in the 20－to－29 age group and a drop for the older population.

　　“Most cancers have multiple causes，” she says，but she points to laboratory research that suggests low－energy radiation could damage cells that could possibly lead to cancer.

　　Children are more vulnerable(易受伤的) to radiation than adults，Ms.Davis and other scientists point out.Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid(易吸收的液体)．“No studies have yet been completed on cell phone radiation and children，”she says.

　　Henry Lai，a research professor in the bioengineering department at the University of Washington，began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.

　　Ms.Davis recommends using wired headsets or the phone's speaker.Children should text rather than call，she said，and pregnant women should keep phones away from the abdomen(腹部)．

　　【语篇解读】　使用手机会带来辐射的负影响，因此需要正确使用手机。

　　1．Why is the warning in the small print?

　　A．They don't want the users to pay attention to it.

　　B．There is not enough space for the warning.

　　C．They think people will not care about it.

　　D．The warning is not important at all.

　　【解析】　细节理解题。根据第一段“This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased.”可推断厂商不想让顾客注意到它而将警示语印得极小，故选A项。

　　【答案】　A

　　2．Why do children easily be affected by radiation?

　　A．Because they haven't grown up.

　　B．Because they are too young to protect themselves.

　　C．Because they use cell phones more often than adults.

　　D．Because their skulls are thinner and their brains are easily hurt.

　　【解析】　细节理解题。根据“Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid(易吸收的液体)”可知，小孩更容易受辐射的影响是因为他们的头骨更薄，大脑更容易受伤，故选D项。

　　【答案】　D

　　3．What can we conclude from the last paragraph?

　　A．Pregnant women should keep cell phones away.

　　B．People should use cell phones in the correct way.

　　C．If you are a child，you'd better text than make phone calls.

　　D．When you use a cell phone，use a wired headset or the phone's speaker.

　　【解析】　推理判断题。最后一段“Ms.Davis recommends using wired headsets or the phone's speaker.Children should text rather than call，she said，and pregnant women should keep phones away from the abdomen”所讲述的都是一些正确使用手机以防止辐射的影响的方法，由此判断选B项。

　　【答案】　B

　　4．What does the passage mainly talk about?

　　A．Be careful when using cell phones.

　　B．Don't hold your cell phone against your ear.

　　C．Rats exposed to radiation have damaged DNA in their brains.

　　D．Low－energy radiation could damage cells that could lead to cancer.

　　【解析】　主旨大意题。本文主要介绍使用手机的副作用，最后警示人们要正确使用手机。因此A项更能说明全文的主旨，而其他三项只是文中的细节内容，故选A项。

　　【答案】　A

　　Ⅲ.阅读填句

　　(2017·云南省玉溪一中模拟)

　　How to Calm Your Teen's Nerves before an Exam

　　Stress is a feeling of physical and mental of emotional strain of tension, which disturbs or interferes with normal physiological balance. Stress can be overwhelming for anyone, but it can be especially difficult for a teen that has not yet developed effective coping skills. A major source of teen stress is school exams, and test anxiety is not uncommon. So, how can parents help their teen stay calm before an exam?

　　Recognize when your teen is under stress.

　　Teens can feel an immense pressure to do well on exams. For some teens, just the idea of taking the test can bring them into a panic(恐慌). __1__Emotional symptoms include: excessive of uncontrollable drying, aggression or mood swings, and panic attacks.

　　What should parents do?

　　－Be involved

　　Parents need to be involved in their teen's work. What they look for is your presence－to talk, to dry, or simply to sit with them quietly. Communicate openly with your teen. __2__

　　－Help them get organized

　　Help your teen think about what he she has to study and plan accordingly. __3__

　　－Give them a nutritious diet

　　It's important for your teen to eat a healthy, balanced diet during exam times to focus and do his/her best.

　　__4__If this happens, encourage your teen to eat light meals or sandwiches. A healthy diet rather than junk food, is best for reducing stress.

　　－Show a positive attitude

　　__5__If you panic, blame, or apply to much pressure, your teen will have an undue increase in their stress levels. Make your teen feel accepted and valued for his/her efforts. Most important, reassure your teens that things will be all right, no matter what the results are.

　　A．Together，you and your teen can work out a time－table in which he/she can study for what he/she knows will be on the test.

　　B．A parent's attitude will dictate their teen's emotions.

　　C. Physical symptoms of stress and anxiety include: lack of sleep, difficulty breathing, loss of appetite of irregular eating.

　　D. Encourage your teen to relax.

　　E. Encourage your teen to express his/her worries and fears, but don't let him/her focus on those fears.

　　F. Your teen may also make negative comments about themselves.

　　G. Exam stress can make some teens lose their appetite.

　　【答案】　1－5　C E A G B

　　Ⅳ.短文改错

　　(2017·无极中学月考)I went to Shanghai Expo on last week. At the gate I happened to meet some America tourists. I greeted him in English and then we began to chat. I got to know that they were college students travel in China. They were busy with taking pictures and were much impressed with the changes had taken place in the past few years. After which, we visited China Pavilion and had a good time. We exchanged our email address so that we could write to each other on the future. They thanked me again and again. I was very glad to have a chance to practising my oral English.

　　【答案】　第一句：去掉last 前的 on　第二句：America改为 American　第三句：him改为them　第四句：travel改为 travelling　第五句：去掉 busy后的with；changes后加that/which　第六句：which改为that　第七句：address改为addresses；on改为in　第九句：practising改为practise