新视野大学英语3unit2课件学习教案

1、会计学1新视野大学新视野大学(dxu)英语英语3unit2课件课件第一页，共53页。I. Pre-reading Activities: Listen, Look & SayWatch & DiscussWatch the video and discuss the given topics.Questions & AnswersListen to a passage and answer some questions.Listen to a passage and fill in the missing words.Compound DictationAcquaint

2、 yourself with some relevant information.Background Information第1页/共53页第二页，共53页。I. Pre-reading Activities: Listen, Look & SayMedicine & Science in Sports & Exercise: This is a multidisciplinary journal featuring original investigations, clinical studies, and comprehensive reviews on curr

3、ent topics in sports medicine and exercise science. With this multidisciplinary journal, exerciseBack下一页下一页physiologists, physiatrists, physical therapists, team physicians and athletic trainers get a vital exchange of information from basic and applied science, medicine, education, and allied healt

4、h fields. 第2页/共53页第三页，共53页。I. Pre-reading Activities: Listen, Look & SayDigestive system: The digestive system is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. Inside this tube is a lining called the mucosa. In the mouth, stomach, and small intestine, the

5、mucosa contains tiny glands that produce juices to help digest food. 上一页上一页Back第3页/共53页第四页，共53页。Compound DictationDirections:You will hear a passage. It will be read twice. Listen carefully and supply the missing words.I. Pre-reading Activities: Listen, Look & SayBack第4页/共53页第五页，共53页。Although ma

6、ny people _ that balance and movement problems are _ with age, an increasing _ of evidence demonstrates that exercise can help _ balance and strength in elderly _ and reduce their chance of _. In Wolfs study, published in May 1996, 215 _ aged 70 to 96 were divided into three groups. _, one group too

7、k a weekly tai chi class, and _. After 15 weeks, “ the tai chi group did the best, and _,” Wolf said. a control group met for a weekly discussion reduced the chance of having a fall by 47 percentseniors One group performed balance exercises on a computer-controlled platform once a weekfallingimprove

8、individualsbodyassumeinevitableBack第5页/共53页第六页，共53页。Questions & AnswersI. Pre-reading Activities: Listen, Look & SayBack1. Why do women often not have enough iron in their bodies?2. If iron levels are low, what problems can women experience?3. What can you eat to get iron and what disadvanta

9、ges can these supplements sometimes have?第6页/共53页第七页，共53页。keyReference Words:to go on a diet, to keep oneself slim, to be particular about, fat-reducing exercise, to reject iron-rich food, to lead to greater loss of iron, physiological characteristics, iron deficiency, monthly bleedingThis is often

10、because most of them go on a restricted diet so as to keep themselves slim. Of course, there are also many other causes of it. One is that many women are more particular about what they eat than men do. Another is their fat-reducing exercise. If they restrict their diet by rejecting iron-rich food,

11、more exercise may lead to greater loss of iron in their blood. A third one lies in their physiological characteristics. Women of child-bearing age are at the greatest risk of iron deficiency as their monthly bleeding is a major source of iron loss.返回返回(fnhu)第7页/共53页第八页，共53页。key返回返回(fnhu)Reference Wo

12、rds:to suffer from, iron deficiency, iron reserves, the molecules of blood protein, the working muscles, fatigue, poor performance, to go to zero, to feel out of breath, to be in troubleIf women suffer from iron deficiency, they may experience such problems as follows: If their iron reserves become

13、lower and lower until they are not enough to form the molecules of blood protein that transport oxygen to the working muscles, fatigue and poor performance may begin to appear in their daily life. Once their iron reserves go to zero, they often feel tired, weak, and out of breath. If they wait until

14、 that point, they are really in trouble.第8页/共53页第九页，共53页。返回返回(fnhu)Reference Words:to add to, the best sources of iron, people with low iron reserves, to take supplements, generally speaking, to undo the problem, to consume iron-rich food, to produce a feeling, of wanting to throw up(呕吐呕吐(u t), to b

15、e poisonous in some caseskeyPeople who suffer from iron deficiency can add more iron-rich food to their diet. The best sources of iron are meat, chicken, and fish. Good sources of other forms of iron include dates, beans, and some leafy green vegetables. People with low iron reserves may also take s

16、upplements. But generally speaking, its better to undo the problem of iron deficiency by consuming iron-rich food than by taking supplements, because supplements may produce a feeling of wanting to throw up, and may be poisonous in some cases. 第9页/共53页第十页，共53页。Directions: Watch the video and then di

17、scuss the topics as follows:2. What advice can you give on physical exercise?key1. What do you think the effects of exercise are?keyI. Pre-reading Activities: Listen, Look & SayVideo watchingBack第10页/共53页第十一页，共53页。返回返回第11页/共53页第十二页，共53页。Do you often go in for physical exercise and what benefits

18、can you get from it?Have you ever stopped to seek the negative effects exercise brings about?Path of thinking:keySummary: As is known to all, life lies in exercise. Whatever form of exercise you take, you can reap a lot from it as long as you persist in it. In general, exercise can bring us benefits

19、 as follows:1) Proper exercise can stimulate the flow of our blood, thus bettering our whole health conditions.2) Regular exercise can greatly improve the speed with which our brains react to what is going on around us.3) Good and progressive exercise can help set up in ourselves ambition for succes

20、s as well as balance of mind. Just as every coin has two sides, however, exercise can also bring us harm. If you are normally inactive and then, prompted by a sudden impulse, start a big program of intense exercise, there are more chances that you have yourself injured. In addition, as for those who

21、 go on a fat-reducing diet, the more exercise they take, the greater loss of iron they will suffer and the worse their health conditions will get. And worst of all, continual as well as excessive exercise is more likely to result in sudden death. Thus, how to go in for exercise is something worth mo

22、re of our concern.返回返回第12页/共53页第十三页，共53页。Whats your art of exercising?What should new exercisers pay attention to?Path of thinking:keySummary:There is nothing new in my way of exercising, but there are two practices I always cling to:1) I never try to follow the fashion. No matter whether the hula l

23、oop or the social dancing is in, my interest in the same exercise always remains what it has been.2) The forms of my exercise change with my age. When I was in teens and twenties, I was fond of playing balls; when I was middle-aged, I turned my interest to table-tennis; and now I am getting on in ye

24、ars, so I become addicted to tai chi, an exercise suitable to the senior. Here are the insights gleaned from my own experience in physical exercise: 1) Before you take any physical exercise, you must have a clear idea about what kind of exercise is good for your health as well as suitable to your ow

25、n physical conditions.2) Once you start your program of exercise, both progressiveness and regularity become two key ingredients in your smooth implementation of the program.3) With the amount of your exercise on a gradual increase, you should add more iron-rich foods to your daily diet.返回返回第13页/共53

26、页第十四页，共53页。Main idea of the text and devices for developing itMain idea of each part and devices for developing itNew words &TextTranscriptDevicesMain ideaNew WordsTextPart Part Part Part IVIV第14页/共53页第十五页，共53页。Back remedy Phrases and Expressions lead to bounce back in general up to take in at r

27、isk tip over the edge out of breath add sth. to throw up go up sum up Proper Names Purdue University Roseanne M. Lyle Medicine & Science in Sports & Exercise John L. Beard Nancy Clark 第15页/共53页第十六页，共53页。BackIron and the Effects of ExerciseSports medicine experts have observed for years that

28、endurance athletes, particularly females, frequently have iron deficiencies. Now a new study by a team of Purdue University researchers suggests that even moderate exercise may lead to reduced iron in the blood of women. 下一页下一页上一页上一页第16页/共53页第十七页，共53页。Back“We found that women who were normally inact

29、ive and then started a program of moderate exercise showed evidence of iron loss,” says Roseanne M. Lyle, associate professor at Purdue. Her study of 62 formerly inactive women who began exercising three times a week for six months was published in the journal Medicine & Science in Sports &

30、Exercise.下一页下一页上一页上一页第17页/共53页第十八页，共53页。Back“Women who consumed additional meat or took iron supplements were able to bounce back,” she notes. “But the new exercisers who followed their normal diet showed a decrease in iron levels.” Iron deficiency is very common among women in general, affecting on

31、e in four female teenagers and one in five women aged 18 to 45, respectively. But the ratio is even greater among active women, affecting up to 80 percent of female endurance athletes. (To be continued) 下一页下一页上一页上一页第18页/共53页第十九页，共53页。BackThis means, Lyle says, that “too many women ignore the amount

32、of iron they take in”. Women of child-bearing age are at greatest risk, since their monthly bleeding is a major source of iron loss. Plus, many health-conscious women increase their risk by rejecting red meat, which contains the most easily absorbed form of iron. And because women often restrict the

33、ir diet in an effort to control weight, they may not consume enough iron-rich food, and are liable to experience a deficiency.下一页下一页上一页上一页第19页/共53页第二十页，共53页。Back“The average woman takes in only two thirds of the recommended daily allowance for iron,” notes another expert. “For a woman who already ha

34、s a poor iron status, any additional iron loss from exercise may be enough to tip her over the edge into a more serious deficiency,” notes the expert. 下一页下一页上一页上一页第20页/共53页第二十一页，共53页。BackExercise can result in iron loss through a variety of mechanisms. Some iron is lost in sweat, and, for unknown re

35、asons, intense endurance exercise is sometimes associated with bleeding of the digestive system. Athletes in high-impact sports such as running may also lose iron through a phenomenon where small blood vessels in the feet leak blood. 下一页下一页上一页上一页第21页/共53页第二十二页，共53页。BackThere are three stages of iron

36、 deficiency. The first and most common is having low iron reserves, a condition that typically has no symptoms. Fatigue and poor performance may begin to appear in the second stage of deficiency, when not enough iron is present to form the molecules of blood protein that transport oxygen to the work

37、ing muscles. In the third and final stage, people often feel weak, tired, and out of breath and exercise performance is severely compromised.下一页下一页上一页上一页第22页/共53页第二十三页，共53页。Back“People think that if theyre not at the third stage, nothing is wrong, but thats not true,” says John L. Beard, who helped

38、design the Purdue study. “Youre not stage 3 until your iron reserves go to zero, and if you wait until that point, youre in trouble.” However, most people with low iron reserves dont know they have a deficiency, because traditional methods of calculating the amount of iron in blood (by checking leve

39、ls of the blood protein that transports oxygen) are not sufficient, Beard states. (To be continued) 下一页下一页上一页上一页第23页/共53页第二十四页，共53页。BackInstead, its important to check levels of a different compound, which indicates the amount of storage of iron in the blood. While active, child-bearing age women ar

40、e most likely to have low iron stores, he notes, “Men are not safe, especially if they dont eat meat and have a high level of physical activity.” (An estimated 15 percent of male long distance runners have low iron stores.) Beard and other experts say its advisable for people in these groups to have

41、 a yearly blood test to check blood iron reserves.下一页下一页上一页上一页第24页/共53页第二十五页，共53页。BackIf iron levels are low, talk with a physician to see if the deficiency should be corrected by modifying your diet or by taking supplements. In general, its better to undo the problem by adding more iron-rich foods

42、to the diet, because iron supplements can have serious shortcomings. (To be continued)下一页下一页上一页上一页第25页/共53页第二十六页，共53页。BackSupplements may produce a feeling of wanting to throw up, and may be poisonous in some cases. The best sources of iron, and the only sources of the form of iron most readily abso

43、rbed by the body, are meat, chicken, and fish. Good sources of other forms of iron include dates, beans, and some leafy green vegetables.下一页下一页上一页上一页第26页/共53页第二十七页，共53页。Back“Select breads and cereals with the words iron-added on the label,” writes sports diet expert Nancy Clark. “This added iron sup

44、plements the small amount that naturally occurs in grains. Eat these foods with plentiful Vitamin C (for example, drink orange juice with cereal or put a tomato on a sandwich) to enhance the amount of iron absorbed.” (To be continued)下一页下一页上一页上一页第27页/共53页第二十八页，共53页。BackClark also recommends cooking

45、in iron pans, as food can derive iron from the pan during the cooking process. “The iron content of tomato sauce cooked in an iron pot for three hours showed a striking increase, the level going up nearly 30 times,” she writes. And people who are likely to have low iron should avoid drinking coffee

46、or tea with meals, she says, since substances in these drinks can interfere with iron being absorbed into the body.下一页下一页上一页上一页第28页/共53页第二十九页，共53页。Back“Active women need to be a lot more careful about their food choices,” sums up Purdues Lyle. “If you pay attention to warning signs before iron reser

47、ves are gone, you can remedy the deficiency before it really becomes a problem.” 上一页上一页第29页/共53页第三十页，共53页。Main idea of the text ?Exercise may lead to more loss of iron in females, which in turn produces serious effects on their health. According to sports medicine experts, active women should pay mo

48、re attention to iron deficiency in their bodies and take correct measures to remedy it before it really becomes a problem. Devices for developing it?Back第30页/共53页第三十一页，共53页。Problem-Analysis-Solution (问题问题(wnt)解决法解决法) Iron and Effects of ExerciseProblemAnalysisSolutionEvaluationThe whole essay is wri

49、tten in a typical problem-analysis-solution-evaluation pattern.Back第31页/共53页第三十二页，共53页。Problem: ? (Para. 1)Now a new study by a team of Purdue University researchers suggests that even moderate exercise may lead to reduced iron in the blood of women. (Para. 1)BackProblem-Analysis-Solution (问题问题(wnt)

50、解决法解决法) 第32页/共53页第三十三页，共53页。Provision of evidence for the problem: ? (Paras. 2 & 3)1) Their study of 62 formerly inactive women who began exercising three times a week showed evidence of iron loss; (Para. 2) 2) Women who consumed additional meat or took iron supplements were able to bounce back;

51、 3) The new exercisers who followed their normal diet showed a decrease in iron levels. (Para. 3) BackProblem-Analysis-Solution (问题问题(wnt)解决法解决法) 返回返回(fnhu)第33页/共53页第三十四页，共53页。Analysis of general causes for it: ? (Para. 4)1) Too many women ignore the amount of iron they take in; 2) Womens monthly bl

52、eeding is a major source of iron loss; 3) Many women increase their risk of iron loss by rejecting red meat; 4) Women are liable to experience a deficiency as a result of restricting their diet in weight control. BackProblem-Analysis-Solution (问题问题(wnt)解决法解决法) 第34页/共53页第三十五页，共53页。Analysis of specifi

53、c causes for it: ? (Paras. 5 - 6)(1) The average woman takes in only 2/3 of the recommended daily allowance for iron, which would easily cause iron deficiency if they take some exercises. (Para. 5)(2) Some iron is lost in sweat, and intense endurance exercises may cause iron deficiency through bleed

54、ing of the digestive system and bleeding of the blood vessels in the feet. (Para. 6)BackProblem-Analysis-Solution (问题问题(wnt)解决法解决法) 第35页/共53页第三十六页，共53页。Analysis of effects of iron deficiency: ?(Paras. 7 - 8)(1) Fatigue and poor performance may begin to appear when not enough iron is present in their

55、 blood to form the molecules of blood protein that transport oxygen to the working muscles. (2) When their iron reserves go to zero, people often feel weak, tired, and out of breath and their exercise performance is severely compromised; and they are in trouble.BackProblem-Analysis-Solution (问题问题(wn

56、t)解决法解决法) 第36页/共53页第三十七页，共53页。Analysis of importance of checking iron reserves: ? (Para. 9)(1) It is important to check levels of a different compound, which indicates the amount of storage of iron in the blood. (2) Both women and men are at risk of iron deficiency as a result of a high level of act

57、ive physical exercise. (3) It is advisable for people in these groups to have a yearly blood test to check blood iron reserves.BackProblem-Analysis-Solution (问题问题(wnt)解决法解决法) 返回返回(fnhu)第37页/共53页第三十八页，共53页。Solution to the problem: ? (Paras. 10 - 11)(1) If iron levels are low, talk with a physician to

58、 see if the deficiency should be corrected by modifying your diet or by taking supplements (Para. 10)(2) Select breads and cereals with the words iron-added on the label (Para. 11)(3) Eat the foods with plentiful Vitamin C to enhance the amount of iron absorbed. (Para. 11)BackProblem-Analysis-Soluti

59、on (问题问题(wnt)解决法解决法) 第38页/共53页第三十九页，共53页。(4) Cook in iron pans, as food can derive iron from the pan during the cooking process. ( Para. 11)(5) Avoid drinking coffee or tea with meals, since substances in these drinks can interfere with iron being absorbed into the body. ( Para. 11)BackSolution to t

60、he problem: ? (Paras. 10 - 11)Problem-Analysis-Solution (问题问题(wnt)解决法解决法) 返回返回(fnhu)第39页/共53页第四十页，共53页。Evaluation: ? (Para. 12)返回返回(fnhu)“Active women need to be a lot more careful about their food choices. If you pay attention to warning signs before iron reserves are gone, you can remedy the deficiency before it really becomes a problem.”BackProblem-Analysis-Solution