题目内容
What is the man's reason for not giving up smoking？
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Research on the benefits of an extremely low-calorie diet【C2】______back to the 1930s, when scientists found that rats lived【C3】______to twice as long when they ate less than control animals. And how about in human？ To fill that【C4】______, scientist Agnes and her colleagues at the University of Muenster【C5】______50 healthy elderly subjects. The【C6】______volunteer was 60 years old and overweight. The researchers【C7】______assigned the volunteers to one of three groups. Twenty people were instructed to reduce their daily calorie【C8】______by 30%, while still eating a【C9】______diet. Another 20 were told to keep their calorie intake the same but increase their【C10】______of unsaturated(不饱和的 )fatty acids. The【C11】______10 volunteers did not change their diets.
After 3 months, all of the volunteers【C12】______a memory test in which they were shown 15 words and asked how many they could remember after 30 minutes.【C13】______average,those in the calorie-restriction group showed a 20%【C14】______over their baseline memory scores taken before they started their diets. Subjects in the other two groups showed【C15】______or no improvement. "Our study【C16】______provides some of the first【C17】______on the impact of calorie restriction on memory in the elderly, but this study has to be【C18】______up now," Floel noted. Her team plans to【C19】______larger studies to determine exactly【C20】______calorie restriction enhances memory.
【C1】
听力原文：M: We seem to be having this conversation over and over again
W: You're fight.
M: Look,I know how you feel about my smoking.You don't have to tell me every day.
W: I'm sorry.I worry about you.
M: I know.But work at school has me so stressed out.Maybe I'll be able to quit after I graduate.
W: Let's be honest.There's always going to be a reason.After you graduate.it's going to be hard to find a job,then there will be the stress from just starting a job,then...
M: Okay,I get your point.It's just so hard.You don't really understand because you never smoke.
W: You need some help.Why don't you go to a doctor？
M: You mean a psychiatrist.
W: No,I mean a general practitioner.Maybe you can get some pills,well,I don't know,something to help you with the withdrawal,because that's what it is.
M: Really,I believe I can't quit on my own.But I'll think about it.I will.
W: A11 right.I won't mention it for a week.Then I want to know your decision, because I need to rethink our plans if you don't get some help.
M: You mean you'd break our engagement over this？I can't believe it!
W: I don't know.I love you,but I'm not sure I should accept everything that goes along with the smoking.
What are the two speakers talking about？
What do we learn about today's cola？
What can we conclude from the end of the conversation？
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