Want to lose weight? Try eating. That’s one of the ways being developed by scie
题型：不详难度：来源：
Want to lose weight? Try eating. That’s one of the ways being developed by scientists experimenting with foods that trick the body into feeling full.
At he Institute of Food Research in Norwich, England, food expert Peter Wilde and his colleagues are developing foods that slow down the digestive system, which then sends a signal to the brain that stops appetite. “That fools you into thinking you’ve eaten far too much when you really haven’t,” said Wilde. From his studies on fat digestion, he said it should be possible to make foods, from bread to yoghurt, that make it easier to diet. While the research is still in its early stages, Wilde’s approach to controlling appetite is one that some doctors say could be a key to solving the problem of obesity.
“Being able to switch off appetite would be a big help for people having trouble losing weight,” said Steve Bloom, a professor of investigative medicine at London’s Imperial College, who is not connected to Wilde’s research. Bloom said that regulating appetite through foods is theoretically possible. But Bloom warned that controlling appetite may be very challenging. “The body has lots of things to prevent its regulatory systems from being tricked,” he said.
Wilde’s research makes use of the body’s ways of digesting fat. Fat normally gets broken down in the first part of the small intestines (肠道). When you eat a high-fat meal, however, the body can only digest the fat entirely further down in the intestines, which then causes the body to produce a kind of chemical to stop the appetite.
Wilde’s approach copies what happens with a high-fat meal. He coats fat droplets (滴) in foods with modified proteins from plants, so it takes longer for the chemical that breaks down fat to reach it. That means that the fat isn’t digested until it hits the far reaches of the intestines. At that point, intestinal cells send a signal telling the brain it’s full. Even though the body hasn’t had a high-fat meal, it stops the appetite as if it has. If the fat had been digested earlier in the intestines, no such signal would be sent.
51. According to Wilde’s research, what could people do if they want to lose weight?
A. Eat more bread and yoghurt. B. Trick the body by eating nothing.
C. Have foods with fat droplets coated. D. Control their digestive system strictly.
52. The underlined word “obesity” in Para. 2 most probably means “________”.
A. being too fat B. eating too much food
C. stopping appetite D. being unhealthy
53. What can be inferred about Professor Bloom’s opinion towards Wilde’s approach?
A. It won’t work since the body’s regulatory systems will never be tricked.
B. It is sure to switch off the appetite of people with a weight problem.
C. It sounds terrible because regulating appetite through foods is not practical at all.
D. It’s no that easy to trick the body so more research should be done.
54. Which of the following is TRUE about Wilde’s approach?
A. A kind of chemical is added to make a high-fat meal less fatty.
B. Fat is digested earlier and the body sends a signal telling the brain it’s full.
C. Fat won’t get broken down in the first part of the small intestines.
D. The chemical that breaks down fat will not reach the fat.
55. The passage is written to ________.
A. give advice on how to stop eating high-fat meals
B. introduce a research on controlling appetite
C. discuss the argument between two professors
D. show different ways to trick the body |
答案
51-55CADCB |
解析
| 略 |
举一反三
六．完形填空（20分）
More than fifty SARS experts ___1___ this month in Geneva at the headquarters of the World Health Organization. They came from fifteen countries to discuss progress ___2___ the lung disease. SARS began in southern China late last year. It ___3___ in Asia and other parts of the world. The W-H-O __4_____ travel warnings. Health officials worked aggressively. They kept SARS patients ____5___ others. They looked for anyone else those patients might have been near.
SARS was contained(遏制) in the middle of this year. By then, eight-thousand people had become sick. More than seven-hundred of ___6____ died.
SARS causes effects similar to ____7___ of pneumonia (肺炎) or influenza. People often cough. Breathing is difficult or ___8____ . Some people need machines to help them breathe. Body temperature goes ___9____ . SARS can also make people feel tired, __10_____ their head hurt and make them not want to eat. Most people with SARS, however, usually recover within two weeks.
1. A. met B. will meet C. saw D. will see
2. A. for B. against C. on D. from
3. A. took place B. spreaded C. take place D. spread
4. A. decided B. declared C. announced D. spoke
5. A. near B. together with C. away from D. close to
6. A. whom B. who C. them D. men
7. A. them B. that C. this D. those
8. A. hurt B. hurtful C. painful D. pain
9. A. down B. away C. up D. to zero
10. A. make B. having made C. making D. made |
This is a dangerous world we live in. The numbers of murders goes up every year； people are dying of cancer；more people contract（感染）HIV；more teens are using drugs；etc. You know this because you’ve heard all the statistics on the news. But do you really have an accurate idea what they mean? The numbers are going up, but how do they compare to the growth in population? Are more cases of these diseases being reported because of better testing techniques, or are the diseases more common? The fact is that without knowing the background, statistics mean very little.
This growing trend of reporting only part of the information is becoming dangerous.
For example, several years ago a high school student reported dangers of the chemical known as dihydrogen monoxide. This chemical, found in most cancerous tumors（肿瘤）， is found in the blood of people drunk on alcohol, and causes complete physical and mental dependence for those who take the chemical even once. After reading his report, more than 75% of his Advanced Placement Chemistry class voted to forbid this dangerous chemical! Every one of the above statements is true, yet this chemical is necessary to all life on earth. The students made the mistake because they voted knowing only a few statements and statistics, rather than the chemical’s full background.
The point of this article is that one should be aware of what is and is not being said. When one finds a new fact or number, one should try to consider other important information before forming an opinion with only half-truths. Always remember that the author is trying to convince you of his or her own view, and will leave out information that is different to his view. For example, look again at the statistics that suggest skiing is safe. Only 32 people may die each year when skiing, while 897 die from lightning strikes, but which is really more dangerous? If you think about it, you will realize far fewer people go skiing each year than the number of people who are in danger of a lightening strike. When you think about it, skiing is more dangerous than you might at first think when looking at statistics. If we teenagers are to be left in this world, we had better be able think critically, and form our own views. rather than be easily persuaded by another’s. To be warned is to be prepared.
59．In the first paragraph, what problem does the writer want to warn us?
A. We are now living in a dangerous world.
B. We got a lot of false statistics from the media.
C. There are around us more and more murders, diseases etc.
D. Statistics alone without full background don’t give us an accurate picture of things.
60．Why does the writer use the example in the second paragraph?
A. To show the danger of reporting only part of the information.
B. To argue that high school students are easily persuaded.
C. To prove what is necessary to us might be dangerous.
D. To warn us of the harmful substances（物质）around us.
61．Relative information is often left out because__________
A. relative information is not that important
B. the author is trying to show what he or she says is true
C. too much information will make readers feel confused
D. readers are not able to analyze so much information at once
62．What is the main idea of this passage?
A. Some measures must be taken to protect our dangerous world.
B. We should learn to think critically and look at problems from all sides.
C. The growing trend of reporting only half-truths is getting out of control.
D. Teenagers ought to improve their ability of telling right from wrong. |
The United Nations Children’s Fund (UNICEF) has declared October 15 as Global Handwashing Day in 2005．The first Global Handwashing Day is on October 15 of 2008.Activities are planned over twenty countries to get millions of people in the developing world to wash their hands with soap. Global Handwashing Day is the idea of the Public-Private Partnership for Handwashing with Soap. Partners include the UN Children"s Fund, American government agencies, the World Bank and soap makers Unilever and Procter and Gamble. The goal is to create a culture of hand washing with soap.
Hand washing can prevent the spread of disease. Experts say people around the world wash their hands but very few use soap at so-called critical moments. These include after using the toilet, after cleaning a baby and before touching food.
When people get germs on their hands, they can infect themselves by touching their eyes, nose or mouth. Then they can infect others.
The organizers say all soaps are equally effective at removing disease-causing germs. The correct way to wash is to wet your hands with a small amount of water and cover them with soap. Rub it into all areas, including under the fingernails. Rub for at least twenty seconds.Then, rinse well under running water. Finally, dry your hands with a clean cloth or wave them in the air. Soap is important because it increases the time that people spend washing. It also helps to break up the grease and dirt that hold most of the germs.And it usually leaves a pleasant smell,which increases the likelihood that people will wash again.
Washing with soap before eating and after using the toilet could save more lives than any medicine. It could help reduce cases of diarrhea(痢疾) by almost half. And it could reduce deaths from pneumonia and other breathing infections by one-fourth. Diarrhea is the second leading cause of child deaths, killing more than one and a half million children a year. Pneumonia is the leading cause, killing about two million children under five each year. Hand washing can also prevent the spread of other diseases.
50.We can learn from Paragraph 1 that _______.
A.the first Global Handwashing Day was held in 2005
B.many originations support the idea of Global Handwashing Day
C.Global Handwashing Day was founded by many soap makers
D.the content of Global Handwashing Day is to wash your hand frequently
51.The underlined phrase “critical moments” in Paragraph 2 refers to _______.
A.the turning points
B.schedules
C.the arrangement of a time
D.the necessary parts in health
52.The main purpose of the story is to tell us ________.
A.hand washing is very important
B.to create a culture of hand washing with soap
C.germs can infect ourselves and others
D.soaps play an important role in everyday life
53.The last paragraph implies that ___________.
A.a soap is a kind of medicine to prevent a disease
B.it is important for children to wash hands in a correct way
C.Pneumonia kills about two million children each year
D.Diarrhea is the second leading cause of child deaths. |
Growing numbers of people are becoming addicted to text messaging（手机信息）, a German doctor warned recently。
Psychotherapist(采用精神疗法的医生) Andreas Herter estimated that there were some 380,000 sufferers in Germany。 Herter based his prediction（预测）on the growing number of manic mobile phone users among patients arriving at his Hanover clinic （诊所）for addiction treatment。
“Text message addiction is a real and serious illness because it causes mental and financial damage,” said Herter。 “The problem leads to depression and personality disorders, not to mention skyrocketing （飞涨的）phone bills。”
For example, a teenage boy spent 8,900 euros (US$11,000) texting people he didn’t even know and a married couple could only communicate by text message, even when they were sitting side by side。
55。 The passage is mainly to tell us ______。
A。 why people like text messaging B。 text messaging has many advantages
C。 overusing text message does great harm D。 text messaging does no good
56。 Herter thinks text message addiction is ______。
A。 acceptable B。 easy to deal with C。 unreasonable D。 worrying
57。 The examples given in the last paragraph are used to show ______。
A。 text message addiction is a serious diseas
B。they care about nothing else but text message
C。 sending text message is their only hobby
D。 they are very rich |
.
第三节完形填空（共20小题，30分）
As China faced up to a battle against bird flu, the government announced a range of control measures it believed would bring the disease under control.
This bird flu 21 more than 16 people across Asia and was made certain in China in late January, 2008 No 22 cases had been found in the mainland but at least 13 of the country’s 31 provinces, autonomous regions(自治区) and municipalities had 23 the disease in poultry(家禽).
“It 24 a difficult task for China to prevent and control the disease, 25 the government is confident in the fight,” said a Vice-Minister of Agriculture. He gave details of a range of measures designed to 26 the disease spreading. Poultry within 3km of infected farms was to be killed and those within 5km vaccinated(接种疫苗). 27 , there would be constant monitoring(监控) and daily 28 on the disease across the country, and 29 production of bird flu vaccines.
Among the 11 Asian countries and regions 30 by bird flu in animals, only Vietnam and Thailand had reported human cases. The people infected were reported to have 31 the disease from poultry.
While the World Health Organization said there was 32 proof of human transmission(传播) of bird flu, it admitted that two sisters who died of bird flu in Vietnam 33 have caught it from their brother.
The big 34 was that the disease could combine with a human flu virus(病毒) to create a deadly 35 disease that would kill millions of people across the 36 . Many Asian farmers live close with their animals and sell 37 chickens on the market. This greatly increases the 38 of human being infected with bird flu.
An official from WHO said Asian countries affected by bird flu should introduce a more 39 way of raising and selling chickens. They have to completely 40 their lifestyle and attitude towards animals.
21．A．hurt B．hit C．struck D．killed
22．A．animal B．bird C．human D．poultry
23．A．shown B．reported C．struck D．said
24．A．remains B．leaves C．stays D．continues
25．A．but B．and C．while D．so
26．A．fight B．control C．keep D．stop
27．A．However B．Meanwhile C．Therefore D．Instead
28．A．controls B．treatments C．reports D．vaccines
29．A．started B．improved C．increased D．attempted
30．A．affected B．destroyed C．connected D．introduced
31．A．held B．covered C．carried D．caught
32．A．some B．much C．no D．more
33．A．should B．might C．must D．need
34．A．accident B．problem C．task D．flu
35．A．new B．strange C．serious D．bad
36．A．country B．area C．mainland D．globe
37．A．killed B．many C．dead D．live
38．A．speed B．possibility C．introduction D．experience
39．A．healthy B．useful C．simple D．gentle
40．A．stop B．change C．form D．keep |
最新试题
热门考点