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科目:高中英語 來源:浙江省溫州市部分中學(xué)2007屆高三第一次月考英語 題型:050
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科目:高中英語 來源:2007-2008學(xué)年度北京育才中學(xué)高三第一次質(zhì)量檢測(cè)、英語 題型:050
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科目:高中英語 來源:遼寧省沈陽市2010屆高三下學(xué)期教學(xué)質(zhì)量監(jiān)測(cè)(二) 題型:閱讀理解
D
Is a recently discovered hormone the reason why folks who lose weight can’t keep it off?
Like millions of other fat people, at 530 inches high, more than 300 pounds, Carnie Wilson was not just fat. After trying all sort of diets that didn’t work, she has to go to the stomach – bypass surgery (胃部迂回手術(shù)), ie, have most of her stomach sewed up, only leaving tiny room to hold several tablespoonfuls at most. Result: she simply couldn’t eat the way she used to. In three years, Wilson is one third of her former weight.
Wilson’s experience is not all that unusual, and while doctors still aren’t exactly sure what is going on, a report in last week’s Journal of Medicine offers an explanation. The loss of appetite in bypass patients may be linked to a recently discovered hormone called ghrelin. Not only that, ghrelin may turn out to be one reason we feel hungry and it’s hare for didters to keep weight off.
Nowadays, researchers are careful to stress only what they know for sure. For the three conclusions, the leading Dr. David of the University of Washington says, “I feel very solid about two of them.” The first is that ghrelin levels in the bloodstream rise significantly before meals and drop afterward. The second conclusion is that ghrelin levels are higher on average in people who have lost weight from dieting.
Dr. David is less sure of the third conclusion, that bypass patients have only a quarter as much ghrelin as most people of normal weight. After all, ghrelin is produced by cells in the stomach. Years ago, leptin, a hormone was found as an appetite suppressant (食物抑制劑). But after years of trying, it had to be given up.
What doctors suspect is that both leptin and ghrelin are part of a complex system of brain and body chemicals that govern weight and appetite. That does not mena pharmaceutical (藥物的) weight control is forever out of the question. “In the next ten years, we will be able to develop new drugs to help people lose weight healthily and effectively.”
47.What can we learn about ghrelin according to the passage?
A.After meals ghrelin levels are higher in the bloodstream.
B.People who have lost weight have less ghreilin in their body.
C.Without ghrelin, people are really difficult to lose weight.
D.Ghrelin is something produced by cells in the stomach.
48.What is Dr. David not sure?
A.pharmaceutical weight control is impossible.
B.There is less ghrelin in the bypass patients.
C.new drugs will be developed in 10 years.
D.ghrelin levels are higher in people on diet.
49.In fact, people’s weight and appetite are controlled by
A.ghrelin and leptin B.hormone and medicine
C.brain and body chemicals D.stomach and food
50.What can we infer from the passage?
A.People with a lower ghrelin level go hungry easily.
B.Doctors managed to use leption to control the appetite.
C.Doctors are optimistic about how to lose weight healthily.
D.The loss of appetite in bypass aptient is linked to leptin
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科目:高中英語 來源: 題型:閱讀理解
A good teacher is many things to many people. In my own experience, the people I respect the most and think about the most are the teachers who demanded (要求) the most discipline (紀(jì)律) from their students.
I miss one teacher in particular that I had in high school. I think she was a good teacher because she was a very strict person. I remember very vividly (清晰地) a sign over her classroom door. It was a simple sign that said, “Laboratory—in this room the first five letters of the word was emphasized (強(qiáng)調(diào)), not the last seven.” In other words, I guess, labor(勞動(dòng)) for her was more important than oratory, which means making speeches.
She prepared her work very carefully and demanded us to do the same. We got lots of homework from her. Once she had broken her arm, and everybody in the class thought that maybe the homework load would be reduced, but it continued just the same. She checked our work by stamping her name at the bottom of the papers to show that she had read them.
I think sometimes teachers who demand the most are liked the least. But as time goes by, this discipline really seems to benefit (有益于) the students.
1. Which of the following is considered a good teacher by the writer?
A.A patient teacher. B.An honest teacher.
C.A strict teacher. D.A hard-working teacher.
2. The teacher put up the sign over her classroom door ___.
A.to remind the students that this room was a laboratory
B.to advise the students to follow the disciplines
C.to warn the students not to be careless
D.to tell the students to work hard in the classroom
3. When the teacher’s arm was broken, she ___.
A.gave her students the usual amount of homework
B.gave her students less homework
C.a(chǎn)sked her students to check the homework themselves
D.gave her students more homework
4. What’s the writer’s opinion of discipline?
A.It makes the students dislike their teachers.
B.It does good to the students in the long run.
C.It’s too much for young children.
D.It does more harm than good to the students.
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