题目
题型:不详难度:来源:
It’s a question many of us could ask. More than 45 million Americans now belong to a health club, up from 23 million in 1993. We spend some $19 billion a year on gym memberships. Of course, some people join and never go. Still, as one major study — the Minnesota Heart Survey — found, more of us at least say we exercise regularly.
And yet obesity (肥胖) figures have risen sharply in the same period: a third of Americans are obese, and another third count as overweight by the Federal Government’s definition. Yes, it’s entirely possible that those of us who regularly go to the gym would weigh even more if we exercised less. But like many other people, I get hungry after I exercise, so I often eat more on the days I work out than on the days I don’t. Could exercise actually be keeping me from losing weight?
The popular belief that exercise is essential for weight control is actually fairly new. As recently as the 1960s, doctors routinely advised against too much exercise, particularly for older adults who could injure themselves. Today doctors encourage even their oldest patients to exercise, which is sound advice for many reasons: People who regularly exercise are at significantly lower risk for all manner of diseases — those of the heart in particular. They less often develop cancer and many other illnesses. But the past few years of obesity research show that the role of exercise in weight loss has been wildly over-evaluated.
“In general, for weight loss, exercise is pretty useless,” says Eric Ravussin, exercise researcher at Louisiana State University. Many recent studies have found that exercise isn’t as important in helping people lose weight as you hear so regularly in gym advertisements or on shows like The Biggest Loser — or from magazines like this one.
小题1: From the passage we learn that ____.
A.some Americans join a health club but never go there |
B.the number of overweight people has doubled since 1993 |
C.more than 45 million Americans now go to the gym regularly |
D.Americans waste too much money each year on sports |
A.has long been believed to be good for older adults |
B.is not properly advertised as an effective way to lose weight |
C.was first recognized as an effective way to lose weight in the 1960s |
D.is less effective in preventing heart disease than what doctors believe |
A.they have the habit of going to the gym regularly |
B.they eat the same food when they do not exercise |
C.they exercise less than required by doctors |
D.they eat more after they exercise |
A.Overweight Is Not Good for Your Health |
B.Exercise Won’t Make You Thin |
C.Gym Is Part of American Lifestyle |
D.Obesity Is a Social Problem in America |
答案
解析
核心考点
试题【One of the most widely accepted, commonly repeated assumptions (假设) in our cultu】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
Pedestrians struck and killed by cars often are extremely drunk. In fact, they are intoxicated(喝醉的) more frequently and with higher blood alcohol levels than drunken drivers who are killed in accidents, various studies have shown. Forty percent of adult pedestrians involved in fatal crashes have a blood alcohol level of at least 0.10 which by law in most states signifies intoxication compared to only 25 percent of drivers in deadly accidents, according to recent federal data.
Some types of pedestrain accidents have been declining nationally, especially those involving children, but the number of adult pedestrians who are drunk when killed in traffic has remained relatively steady at 2500 a year. The total number of pedestrians killed annually in U.S. traffic accidents is at least 7000, or one of every seven highway accidents resulting in death.
“We’re dealing here, we think, with a very severe drinking problem that leads to a severe highway safety problem,” said Richard Blomberg, president of Dunlap and Associates Inc, in Norwalk, Coon.
Blomberg, whose consulting company found a very high rate of alcohol involvement in a controlled study of pedestrian accidents in New Orleans, was among several researchers who spoke on the topic at the annual meeting of the Research council’s Transportation Research Board(TRB) in Washington in January.
Pedestrian accidents have not received enough attention in the past, according to Kay Colpitts, who chairs the board’s committee on pedestrians. Few methods exist to monitor walking habits, she said, and researchers have been mystified(迷惑不解) about how to prevent disasters.
小题1:Which of the following would be the best title for the passage?
A.Traffic Safety. | B.Drunken Drivers |
C.Drunken Pedestrian Accidents. | D.A Severe Highway Safety Problem. |
A.long delays in traffic signals that may make people cross streets ignoring traffic rules |
B.alcohol |
C.a lack of adult keeping eyes on many children involved in accidents |
D.former drunken drivers whose licenses are not allowed to use for a time |
A.are 15 percent less than drunken adult walkers with the same level |
B.are 2500 a year |
C.are at least 7000 in US traffic accidents |
D.make up one seventh of highway accidents |
A.A researcher. |
B.A specialist in traffic safety. |
C.A clerk of a consulting company. |
D.A government official |
"Finally." read the big headline Thursday above a picture of the white phone on the homepage of Apple.com.
The white model was supposed to ship alongside the black one at the iPhone 4"s launch(推出) last June.But design and manufacturing complications delayed the process by 10 months, catching Apple off guard, executives say.
As CNN reported last month, earlier test models of the white iPhone 4 produced unclear photos, especially when the flash(闪光灯) was used.Its whiteness confused the proximity sensor (距离传感器) , which detects when the phone is held next to someone"s head and turns off the touch screen to save battery life.
These problems weren"t present in older iPhones that came in white because they didn"t have flash photography; the proximity sensor was unaffected because the front side of previous models was black.
"We thought we were there a year ago, or less than that, when we launched the iPhone 4, and we weren"t," Philip Schiller, Apple"s chief marketing executive, said in an interview."It"s not as simple as making something white.There"s a lot more that goes into both the material science of it —how it holds up over time…but also in how it all works with the sensors."
Ticonderoga Securities analyst Brian White predicts that the white model could help drive sales of Apple"s phones.He says Apple could sell 1 million to 1.5 million every three months until the next iPhone model is unveiled, which is expected to be this fall.
Forty-five people were lined up at Apple"s flagship New York store Thursday morning to buy white iPhones, according to a CNN Money report.
小题1:The reason why white-colored iPhone 4 was delayed by 10 months is that _______.
A.it"s always sold out due to its popularity |
B.it met some problems concerning design and manufacture |
C.it lacked white manufacturing materials |
D.its proximity sensor can"t save battery life |
A.There are multi-colored models of iPhone 4. |
B.The same design problems were also found in older white iPhones. |
C.IPhone4 will be launched this fall. |
D.Originally designers thought they could solve the problems before iPhone 4 was launched. |
A.Why the White iPhone 4 Took So Long |
B.The History of iPhone 4 |
C.The Attraction of White iPhone 4 |
D.The Design and Manufacture of iPhone 4 |
Education is 24 , compared with schooling. Education has no 25 . It can take place 26 , whether in the shower or on the bus, whether in a kitchen or on a tractor. It includes both the 27 learning that takes place in schools and the whole universe of learning out of class.
28 the experience of schooling can be known in advance, education quite often produces 29 . A chance talk with a 30 may lead to a person to discover how 31 he knows of another country. People obtain education from 32 on. Education, 33 ,is a very 34 and unlimited term. It is lifelong experience that starts long 35 the start of school, and one that should be a necessary part of one’s entire life.
Schooling, on the other hand, is a 36 experience, whose style changes 37 from one way to the next. Throughout a country, children arrive at school at the same time, take 38 seats, use similar textbooks, do homework ,and 39 ,and so on. Schooling has usually been 40 by the edges of the subjects being taught.
小题1:..
A.Then | B.However | C.Thus | D.Therefore |
A.understand | B.need | C.enjoy | D.interrupt |
A.difference | B.importance | C.use | D.problem |
A.unexpected | B.endless | C.countless | D.simple |
A.answers | B.ways | C.edges | D.meanings |
A.anywhere | B.anywhere else | C.some where | D.somewhere else |
A.part-time | B.public | C.standard | D.strict |
A.If | B.Because | C.So | D.Though |
A.pride | B.surprises | C.knowledge | D.progress |
A.neighbor | B.friend | C.foreigner | D.teacher |
A.wonderfully | B.well | C.greatly | D.little |
A.babies | B.grown-ups | C.women | D.men |
A.still | B.next | C.then | D.yet |
A.long | B.broad | C.narrow | D.short |
A.that | B.when | C.after | D.before |
A.basic | B.strict | C.final | D.irregular |
A.unusually | B.differently | C.little | D.frequently |
A.large | B.new | C.fixed | D.small |
A.take exams | B.hold exams | C.mark papers | D.read papers |
A.changed | B.limited | C.chosen | D.controlled |
There are more than one billion people in the world who live without 37 drinking water. The United Nations 38 to cut this number in half by 2015.
Solving such a big problem seems like a(n) 39 challenge. But everyone, 40 teenagers, can do something to help. A teenage girl in the US has set an example to the 41 of her age around the world.
Rene Haggerty, 13, was awarded the 2004 Gloria Barron Prize for her work— 42 discarded(废弃的) batteries(电池)which pollute water.
In 2003, Haggerty went on a field trip to the Great Lakes Science Centre in Ohio. There she saw an exhibit about how 43 in old batteries harm the water of Lake Erie.
Haggerty learnt that 44 the batteries was an easy solution. “I think everybody can do it, because everyone 45 batteries, and it can make a big difference.” With these words, she began to 46 awareness in her area.
She 47 her county government and school board. She got permission to start a recycling programme in schools 48 the public library, hospital, and churches. With the help from her family, friends and local waste-management 49 , she gathered containers, arranged transportation, and made a(n) 50 video.
Over the past two years, she collected four tons of batteries and drew the attention of officials, who were in charge of a battery recycling programme but had made 51 progress.
When asked 52 she feels like a hero, Haggerty is quite __53 . “Not really. Well, maybe for the fish I saved!”
Every year the Gloria Barron Prize is 54 to young Americans aged 8 to 18 who have shown leadership and courage in 55 the public and the planet. Each year ten winners receive US $ 2,000 each, to help with their education costs or their public service work.
小题1:..
A.had | B.gave | C.wrote | D.discussed |
A.enough | B.safe | C.much | D.polluted |
A.asks | B.orders | C.hopes | D.ensures |
A.good | B.strong | C.important | D.unreal |
A.especially | B.sometimes | C.even | D.seldom |
A.boys | B.others | C.students | D.grown-ups |
A.collecting | B.selling | C.buying | D.using |
A.things | B.chemicals | C.water | D.air |
A.making | B.recycling | C.reducing | D.handling |
A.uses | B.has | C.throws | D.needs |
A.tell | B.increase | C.spread | D.inform |
A.talked to | B.listened to | C.heard from | D.thought about |
A.and | B.besides | C.as well as | D.as good as |
A.officials | B.workers | C.clerks | D.experts |
A.industrial | B.agricultural | C.scientific | D.educational |
A.much | B.no | C.some | D.little |
A.if | B.how | C.when | D.why |
A.proud | B.glad | C.modest | D.worried |
A.praises | B.helps | C.supports | D.honors |
A.awarding | B.saving | C.serving | D.favoring |
小题1: Annealing can make metal
A.hard and tough (韧). | B.hard but brittle. |
C.soft but tough. | D.soft and brittle. |
A.To make it hard. | B.To make it soft. |
C.To make it cool. | D.To make it brittle. |
A.It can be heated and then cooled quickly. |
B.It can be cooled and then heated slowly. |
C.It can be heated and then cooled slowly. |
D.It can be cooled and then heated quickly. |
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