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He goes to school by bike, and the()takes half an hour.
A . travel
B . journey
C . voyage
D . tri
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Diesel engine main and connecting rod precision bearings are made in halvesEach half exceeds one-half the bearing circumference by a small amountThe small amount is termed ().
A . clearance
B . crush
C . pitch
D . thrust
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13.Four and half hours of discussion took us up to midnight,and break for cheese,chocolate and tea with sugar.
A . a;a
B . the; the
C . 不填;the
D . a;不填
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37.The tour will take about an hour and a half. We ought to be back here by 3:00.
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Half an hour later, Lucy still couldn't get a taxi ________ the bus had dropped her.
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There was such a long line at the exhibition ________ we had to wait for about half an hour.
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I’ve been waiting for him for____hour and ________half.
A.×;×
B.the;a
C.a;×
D.an;a
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Birds are literally half-asleep--with one brain hemisphere alert and the other sleeping, according to a new study of sleeping ducks.
Earlier Studies have documented half-brain sleep in a wide range of birds. The brain hemispheres take turns sinking into the sleep stage characterized by slow brain waves. The eye controlled by the sleeping hemisphere keeps shut, while the wakeful hemisphere's eye stays open and alert. Birds also can sleep with both hemispheres resting at once.
Decades of studies of bird flocks led researchers to predict extra alertness in the more vulnerable, end-of-the-row sleepers. Sure enough, the end birds tended to watch carefully on the side away from their companions. Ducks in the inner spots showed no preference for gaze direction.
Also, birds dozing (打盹) at the end of the line resorted to single-hemisphere sleep, rather than total relaxation, more often than inner ducks did. Rotating 16 birds through the positions in a four-duck row, the researchers found outer birds half-asleep during 32 percent of dozing time versus about 12 percent for birds in internal spots.
"We believe this is the first evidence for an animal behaviorally controlling sleep and wakefulness simultaneously in different regions of the brain," the researchers say.
The results provide the best evidence for a long-standing supposition that single- hemisphere sleep evolved as creatures scanned for enemies. The preference for opening an eye on the. lockout side could be widespread, he predicts. He's seen it in a pair of birds' dozing side-by-side in the zoo and in a single pet bird sleeping by a mirror. The mirror-side eye closed as if the reflection were a companion and the other eye stayed open.
Useful as half-sleeping might be, it's only been found in birds and such water mammals (哺乳动物) as dolphins, whales, and seals. Perhaps keeping one side of the brain awake allows a sleeping animal to surface occasionally to avoid drowning.
Studies of birds may offer unique insights into sleep. Jerome M. Siegel of the UCLA says he wonders if birds' half-brain sleep "is just the tip of the iceberg (冰山) ". He speculates that more examples may turn up when we take a closer look at other species.
A new study on birds' sleep has revealed that ______
A.half-brain sleep is found in all kinds of birds
B.half-brain sleep is characterized by accelerated brain waves
C.birds can control their half-brain sleep consciously
D.birds always sleep with the whole of their brain at rest
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A nurse and her elderly uncle were waiting for a bus at a corner in downtown Chicago. Buses came by, not the one they wanted. The woman finally half-entered one of the buses and asked the driver if the bus she wanted stopped at that corner.
The driver looked at her but made no answer, so she repeated the question. To her surprise, he then closed the door, on her arm, and drove off.
The woman, her arm stuck in the door, ran alongside the bus, shouting. Passengers said the driver stopped after almost a block only because they, too were shouting.
When the driver finally did stop and open the door, the woman jumped on the bus to get his bus number. Then he took off again and went another couple of blocks before other shouting passengers persuaded him to stop and let the woman off.
After the driver' s bossed at a tax-support governmental company(CTA) heard of the incident, they looked into it and set his punishment: a five-day suspension (停职) without pay. That struck me as rather light.
But Bill Baxa, the company' s public-relation man, "That' s a pretty serious punishment.
Five days off work is a serious punishment for dragging a woman alongside a bus by her arm? Baxa said, "Any time you take money away from someone, it is a terrible punishment. The driver make $14 an hour. Multiply(乘)that by 40 and you can see that he lost."
Yes, that come to $560, a good sum. But we know that people in the private company are fired for far less every day. If the people who run the bus company think that the loss of a week' s pay is more than enough, I offer them a sporting suggestion: Give me a bus. Then have their arms in the doorway of the bus, and I' 11 slam the door shut, shut the bus quickly and take them for a fast one block run.
And I'll pay $560 to anyone who is bold enough to try it. Any takers? Mr Baxa? Anyone?
I didn't think so.
The nurse half-entered one of the buses because ______.
A.the bus they wanted didn't stop
B.She wanted the driver to stop the bus
C.She wanted to get some information from the driver
D.She and her uncle couldn't wait any longer at the corner
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—What's one fourth and a half, do you know?—Yes, it's ______.
A.A.two sixths
B.B.three fourths
C.C.one three
D.D.three sixths
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听力原文:W: I was a half-hour late for Professor Harrison's lecture this morning. Could you lend me your notes, Jim?
M: Sure. But you won't find anything in my notes. He didn't say anything important during your absence.
Q: What do we learn from the conversation?
(19)
A.Jim's notes are not very good.
B.Professor Harrison doesn't teach well.
C.Mary should have come to the lecture earlier.
D.Mary doesn't have to borrow notes from Jim.
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UTES AT NIGHT)◑The train service to the airport runs 24 hours a day.◑Airport trains leave Platform. 3 at 20 minutes past the hour.◑The airport express takes half an hour at night.
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—It is said that another new car factory______--Yeah. It ______ one and a half years.
A.isbuilding;takes
B.isbeingbuilt;willtake
C.isbuilt:willtake
D.isbeingbuilt;takes
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It's found that office workers usually spend one and a half hours every day on ______.
A.real work tasks
B.having lunch
C.commuting
D.socializing
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We were__________for half an hour in the traffic and so we arrived late.
A. kept up B. held up
C. cut up D. brought up
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听力原文: India and Pakistan have agreed to set up a telephone hotline between their foreign ministries to reduce the risk of nuclear war. An Indian Foreign Ministry spokesman says the two countries will use the hotline to warn of nuclear threats or accidents and help prevent misunderstandings. The talks in New Delhi aimed at reducing the risk of a possible nuclear confrontation are the first since India and Pakistan test-fired nuclear devices six years ago. India and Pakistan have fought three wars since 1947 and came close to another one two years ago.
What have India and Pakistan agreed to do?
A.To improve telecommunications.
B.To avoid misunderstanding.
C.To warn of military clashes.
D.To prevent nuclear confrontation.
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The latest generation of Honda's solar cars, the Dream, broke the record in this year's World Solar Challenge (WSC). Starting in Darwin on Sunday, 26th October, the two-man, four-wheel vehicle completed the 3010-kin-course to Adelaide in just 33 hours and 32 minutes, taking two and a half hours off the remarkable time set three years ago by the previous Honda Dream team in a lighter, one-man, three-wheel vehicle.
The latest Dream managed an average speed of 89.76 km/h, compared to 84.96 km/h for the previous one, despite stormy winds and uphill slope slowing all the competitors during the event's second day. However, during the final day's run from the South Australian desert mining town of Coober Pedy to Adelaide, the Dream cruised(以发动机效率最高的速度行驶) at 100 km/h, occasionally accelerating to 110 km/h. "We are very tired and very happy," the Dream team's project leader, Masashi Kitagawa, told the crowd of reporters waiting at the finish line at Adelaid's Technology Park.
The School of Biel team placed second, an hour and 28 minutes behind the Dream, having averaged 86 km/h. The Swiss engineering school is Honda's perennial rival(竞争对手) in this event, having beaten Honda in 1990 to set a course record of 38.50 hours. However, they placed a distant second to the Honda Dream in the 1993 event. A full report, along with pictures, will appear in the next issue of Honda: The Magazine.
The phrase "the latest generation of Honda's solar ears, the Dream" implies that ______.
A.Honda is a car maker
B.the Dream is a model of solar car produced by Honda
C.Honda's solar technologies are being improved over time
D.all of the above
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Throughout human history there have been many stringent taboos concerning watching other people eat or eating in the presence of others. There have been attempts to explain these taboos in terms of inappropriate social relationships either between those who axe involved and those who are not simultaneously involved in the satisfaction of a bodily need, or between those already satiated and those who appear to be shamelessly gorging. Undoubtedly such elements exist in the taboos, but there is an additional element with a much more fundamental importance. In prehistoric times, when food was so precious and the on-lookers so hungry, not to offer half of the little food one had was unthinkable, since every glance was a plea for life. Further, during those times, people existed in nuclear or extended family groups, and the sharing of food was quite literally supporting one' s family or, by extension, preserving one' s self.
If the argument in the passage is valid, taboos against eating in-the presence of others who are NOT also eating would be LEAST likely in a society that ______.
A.always had a plentiful supply of food
B.emphasized the need to share worldly goods
C.emphasized the value of privacy
D.discouraged overindulgence
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People tend to amass possessions. Indeed they can have a delightful surprise when they find something useful which they did not know they owned. Some people leave unwanted objects in drawers, cupboards and attics for years, in the belief that they may one day need just those very things. Collecting as a serious hobby is quite different. It provides relaxation for leisure hours, because just looking at one s treasures is always a joy. One does not have to go out for amusement, since the collection is housed at home. Whatever it consists of, stamps, first editions of books, antique furniture, stuffed birds, toy animals, there is always something to do in connection with it, from finding the right place for the latest addition to verifying facts in reference books. This hobby educates one not only in the chosen subject, but also in general matters which have some bearing on it.
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Common sense would tell us that physically active children may be more likely to become active and healthy adults.In the United States, elementary and middle schools are advised to give students two and a half hours of physical activity a week.That is what the Centers for Disease Control and Prevention and the American Heart Association recommend (推荐). They say high schools should provide about four hours of physical activity each week. Yet many schools across the country have reduced their physical education programs. Criticism of the cuts has led in some places to efforts to give students more time for exercise, not less.
The future health of Americans may depend on it. Just this week, a study reported that life expectancy (预期寿命) has fallen or is no longer increasing in some parts of the United States. The situation is worst among poor people in the southern states, and especially women. Public health researchers say it is largely the result of increases in obesity (肥胖), smoking and high blood pressure. They also blame differences in health services around the country.
In 2006, a study found that only four percent of elementary schools provided daily physical education all year for all grades. This was true of eight percent of middle schools and two percent of high schools. The study also found that 22 percent of all schools did not require students to take any P. E. (体育课).
Charlene Burgeson is the executive director of the National Association for Sport and Physical Education. She says one problem for P. E. teachers is that schools are under pressure to put more time into academic subjects. Also, parents may agree that children need exercise in school. Yet many parents today still have bad memories of being chosen last for teams because teachers favored the good athletes in class.
But experts say P. E. classes have changed. They say the goal has moved away from competition and toward personal performance, as a way tp build a lifetime of activity. These days, teachers often lead activities like weight training and yoga. Some parents like the idea of avoiding competitive sports in P.E class. Yet others surely dislike that idea. In the end, schools may find themselves in a no-win situation.
Why are schools recommended to give students certain time for sports?
A.Because different schools set up different physical education programs.
B.Because the physical activity of children will influence their health in adulthood.
C.Because nowadays children spend too much time on their studies.
D.Because only four percent of elementary schools provided daily physical education.
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One day two scientists were quarrelling about whose watch was better, the German one or the Japanese one. Since they were scientists, they decided to do an experiment to test the watches. They went into their lab and filled a basin with water, put the watches in, waited for 20 minutes and took them out.
They could see there was something wrong with both watches. They observed them for several hours before speaking to each other. They both silently found the German watch was losing 60 minutes and the Japanese are doubled that.
The scientists with the Japanese watch then slowly raised his head and said, “Both watch are out of work, but my watch is right more often than yours, so it’s better.” The scientist with the German watch went home without saying a word.
(1) The two scientists were quarrelling at the beginning of the story, because_______.
A.the Japanese watch was better
B.the German watch was better
C.each of them thought his own watch was better than the other’s
D.both the watches were wrong
(2) They did an experiment because they_______.
A.wanted to know whose watch was better
B.liked their lab
C.wanted to repair their watches
D.had a basin of water in their lab
(3) After they did the experiment, they found_______.
A.both their watches were good
B.neither of their watches could tell the correct time
C.there was something wrong with the German watch
D.there was something wrong with the Japanese watch
(4) After putting the Japanese watch in water for 20 minutes, two scientists found_______.
A.it was a good watch
B.it went forward
C.it went faster than the German one
D.it went backwards 120 minutes
(5) How about the German watch at last?
A.It went more correctly than before.
B.It stopped working.
C.It went as well as the Japanese one.
D.It was better that the Japanese one.
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With the help of people, the police brought the violence () in less than a half-hour.
A.to light
B.down
C.under control
D.to an end
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It took us about two hours and a half to finish the work.()
A.as much as
B.more than
C.less than
D.more or less than
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Any mistake made in the printing of a stamp raises its value to stamp collectors.A 21 on one inexpensive postage stamp has made the stamp 22 a million and a half times its original value.
The mistake was made more than a hundred years ago in the British colony of Mauritius, a small 23 in the Indian Ocean.24 1847 an order for stamps was sent to a London printer Mauritius was 25 the fourth country in the world to issue stamps.
Before the order was filled and delivered, a ball was planned at Mauritius'Government House, and stamps were needed to 26 the invitations.A local printer was instructed to 27 the design for the stamps.He accidentally inscribed the words “Post Office” 28 “Post Paid” on the several hundred stamps that he printed.
Today 29 only twenty-six of these misprinted stamps left, fourteen One Penny Orange-Reds and twelve Two Penny Blues.Because of the Two Penny Blue's rareness and age, collectors have paid 30 $16800 for it.
21.A.arrow
B.mistake
C.print
D.value
22.A.test
B.cause
C.course
D.worth
23.A.island
B.people
C.continent
D.land
24.A.Since
B.For
C.In
D.On
25.A.to appeal to
B.to become
C.to worry
D.to allow
26.A.deal in
B.deal with
C.send out
D.send for
27.A.decide
B.agree
C.steal
D.copy
28.A.instead of
B.instead for
C.in spite of
D.in need of
29.A.take out
B.there are
C.for example
D.X
30.A.as little as
B.as much as
C.so much
D.great deal