Unit 3 Language in use.句型突破1为了保持健康，我们应该参加不同种类的体育活动。_2做运动不仅使我们身体健康，还能使我们的大脑得到放松。_.小试牛刀假如你叫李华，你的同学正在开展一场讨论，主题是：“中学生要不要参加体育锻炼”。请根据下面所提供的信息，用英语总结出讨论情况，80词左右。提示：70%的学生30%的学生应该每天进行体育锻炼，但不要时间过长锻炼浪费时间、使人疲劳锻炼能增强体质，保持健康锻炼以后很兴奋，较长时间不能投入学习锻炼能使大脑休息，使学习效果更好锻炼中可能会受伤We have discussed about whether it is necessary for middle school students to do sports training.According to the result，_Anyway，as everybody knows，enough exercise is necessary.Meanwhile，we should take care of ourselves when exercising.拓展阅读（A）阅读短文，选择正确的答案。To lose weight，exercise alone is not enough because people sit too much today.Thats what the latest research has shown.Marc Hamilton led a team of scientists to do a research at the University of Missouri.Scientists have been wondering why so many people take exercise every day but they are still overweight.This research was designed to find the reason.In the experiments，Hamilton used a few lab mice and pigs，as well as twelve human volunteers（志愿者），including himself.He wanted to learn more about the effects（作用）of sitting.When the lab animals were sitting down，lipasea material in the body that does the job of reducing fatwent down to 10 percent of normal after several hours.The research team got the same result from the experiments with humans.“It was hard to believe at first，” said Hamilton，“but its true.” Those who exercise daily spend much more time sitting during the rest of the days，and the longer they are sitting，the more fat they get.Hamilton advises，“Keep exercising every day，but remember to stand up and take a walk from time to time during the day.”（）1.People exercise every day but are still overweight because _.Athey eat too much unhealthy foodBthey dont get enough trainingCthey sit too long（）2._ were not used in the experiments.ALab dogs BLab pigs CHumans（）3.If a slim girl sits for a long time to watch TV every day after eating dinner，she will be _.Atired Bsmart Cfat（）4.According to his research，Hamilton advises people to _.Astop doing daily exerciseBwalk around from time to time during the dayCeat less and exercise more every day（）5._ would be the best title for the passage.ASitting Can Put on WeightBA New Way to Do ExerciseCWhy People Do Experiments with Animals（B）阅读短文，用完整的句子回答问题。Samuel was ill.He went to the doctors.The doctor told him to put out his tongue，and then said，“OK.You can put your tongue back now.Theres nothing wrong with you，but Im afraid you have a problemyou dont take exercise.”“But doctor，” Samuel said，“I dont think so.”“Dont tell me what you think，” the doctor said，“I know what you need.I see a lot of people like you.None of them get any exercise.They sit in offices all day and in front of the TV in the evening.You must walk quickly for at least 20 minutes a day.”“Doctor，you dont understand，” Samuel said.“I take enough exercise every day.”“I dont want to hear any excuse，” the doctor said，“You must find time for exercise.If you dont，you will get fat and have health problems.”“But I walk every day，” Samuel said.“Oh，yes，and I know what kind of walking that is.You walk a few meters to the bus stop from your house，a few more meters from the bus stop to your office，and a few more meters from your office to your diningroom for lunch and back.Thats not a real walk.Im talking about a walk in the park or by the lake for twenty minutes every day！”“Would you please listen to me，doctor？” Samuel said，getting a little angry with his doctor.“Im a postman，” Samuel went on，“and I walk nearly seven hours every day.” For a moment，the doctor kept silent，then he said quietly，“Put out your tongue again，will you？”1What is Samuels job?_2What did the doctor think after he checked Samuels tongue?_3What did the doctor think when Samuel said he took exercise every day?_4Whats a real walk according to the doctor?_5How did Samuel feel with the doctor？Why?_参考答案.1.In order to stay/keep healthy，we should take part in different kinds of exercise.2Doing exercise can not only make us healthy，but also relax our mind as well.We_have_discussed_ab