题目内容
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[主观题]
Only when the new bridge was completed, __________return home for a short rest.
A、could he to
B、he could to
C、he was able
D、was he able to
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题目内容
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题目内容
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A、could he to
B、he could to
C、he was able
D、was he able to
如果结果不匹配，请 联系老师 获取答案
更多“Only when the new bridge was c…”相关的问题
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Shopping at Second-hand Clothing Stores
When 33-year-old Pete Barth was in college, shopping at second-hand clothing stores was just something he did-- "like changing the tires on his car." He looked at his budget and decided he could save a lot of money by shopping for clothes at thrift shops.＜br＞
"Even new clothes are fairly disposable (可丢掉的) and wear out after a couple of years,"Barth said. "In thrift shops, you can find some great stuff whose quality is better than new clothes."＜br＞
Since then, Barth, who works at a Goodwill thrift shop in the US state of Florida, has found that there are all kinds of reasons for shopping for second-hand clothing. Some people, like him,shop to save money. Some shop for a crazy-looking shirt. And some shop as a means of conserving energy and helping the environment.＜br＞
Pat Akins, an accountant at a Florida Salvation Army (SA) (救世军 ) thrift shop, said that, for her, shopping at thrift shops is a way to help the environment.＜br＞
"When my daughter was little, we looked at it as recycling," Akins said. "Also, why pay 30 dollars fora new coat when you can get another one for a lot less？"＜br＞
Akins said that the SA has shops all over the US-- "some as big as department stores." All of the clothes are donated (捐赠), and when they have a surplus (盈余), they&39;ll have "stuff a bag"specials where customers can fill a grocery sack with clothes for only 5 or 10 dollars.＜br＞
Julia Slocum,22, points cut, however, that the huge amount of second-hand clothing in the us is the result of American wastefulness.＜br＞
"I&39;d say that second-hand stores are the result of our wasteful, materialistic culture," said Slocum, who works for a pro-conservation organization, the Center for a New American Dream.＜br＞
"Thrift shops prevent that waste from going to landfills (垃圾填埋场 ) ; they give clothing a second life, provide cheaper clothing for those who can&39;t afford new ones and generate (生成) income for charities. They also provide a way for the wealthy and middle classes to shed (摆脱) some of the guilt for their level of consumption."
Which statement about Barth is NOT true？ 查看材料
A.He is 33 years old now
B.He works at a Goodwill thrift shop
C.He was a college student many years ago
D.He works at a Salvation Army thrift shop
请根据短文内容，回答题。
Washoe Learned American Sign Language
An animal that influenced scientific thought has died. A chimpanzee named Washoe and born in Africa died of natural causes late last month at the age of 42 at a research center in the American state of Washington. Washoe had become known in the scientific community and around the world for her ability to use American Sign Language. She was said to be the first non-human to learn a human language. Her skills also led to debate about primates and their ability to understand language.＜br＞
Research scientists Allen and Beatrix Gardner began teaching Washoe sign language in 1966.＜br＞
In 1969, the Gardners described Washoe&39;s progress in a scientific report. The people who experimented with Washoe said she grew to understand about 250 words. For example, Washoe made signs to communicate when it was time to eat. She could request foods like apples and bananas. She also asked questions like, "Who is coming to play？" Once the news about Washoe spread, many language scientists began studies of their own into this new and exciting area of research. The whole direction of primate research changed.＜br＞
However, critics argued Washoe only learned to repeat sign language movements from＜br＞
watching her teachers. They said she had never developed true language skills. Even now, there are some researchers who suggest that primates learn sign language only by memory, and perform. the signs only for prizes. Yet Washoe&39;s keepers disagree. Roger Fouts is a former student of the Gardners. He took Washoe to a research center in Ellensburg, Washington. There, Washoe taught sign language to three younger chimpanzees, which are still alive.＜br＞
Scientists like private researcher Jane Goodall believe Washoer provided new information about the mental workings of chimpanzees. Today, there are not as many scientists studying language skills with chimps. Part of the reason is that this kind of research takes a very long time.＜br＞
Debate continues about chimps understanding of human communication. Yet, one thing is sure-- Washoe changed popular ideas about the possibilities of animal intelligence.
The Gardners‘ experiment with Washoe__________. 查看材料
A.began in 1969
B.won a big prize
C.lasted three years
D.influenced primate research
请根据短文的内容，回答题。
Easy Learning
Students should be jealous. Not only do babies get to doze their days away, but they&39;ve also mastered the fine art of learning in their sleep. By the time babies are a year old they can recognize a lot of sounds and even simple words.＜br＞
Marie Cheour at the University of Turku in Finland suspected that they might progress this fast because they leam language while they sleep as well as when they are awake.＜br＞
To test the theory, Cheour and her colleagues studied 45 newborn babies in the first few days of their lives. They exposed all the infants to an hour of Finnish vowel sounds--one that sounds like "oo", another like "ee" and a third boundary vowel peculiar to Finnish and similar languages that sounds like something in between. EEG recordings of the infants brains before and after the session showed that the newboms could not distinguish the sounds.＜br＞
Fifteen of the babies then went back with their mothers, while the rest were split into two sleep-study groups. One group was exposed throughout their night-time sleeping hours to the same three vowels, while the others listened to other, easier-to-distinguish vowel sounds.＜br＞
When tested in the morning, and again in the evening, the babies who&39;d heard the tricky boundary vowel all night showed brain wave activity indicating that they could now recognize this new sound. They could identify the sound even when its pitch was changed, while none of the other babies could pick up the boundary vowel at all.＜br＞
Cheour doesn&39;t know how babies accomplish this night-time learning, but she suspects that the special ability might indicate that unlike adults, babies don&39;t "turn off&39; their cerebral cortex while they sleep. The skill probably fades in the course of the first year of life, she adds--so forget the idea that you can pick up tricky French vowels as an adult just by slipping a language tape under your pillow. But while it may not help grown-ups, Cheour is hoping to use the sleeping hours to give remedial help to babies who are genetically at risk of language disorders.
Babies can leam language even in their sleep. 查看材料
A.Right
B.Wrong
C.Not mentioned
请根据短文内容，回答题。
Kicking the Habit
What is a bad habit？ The most definition is that it is something that we do regularly, almost without thinking about it, and which has some sort of negative consequence. This consequence could affect those around us, or it could affect us personally. Those who deny having bad habits are probably lying. Bad habits are part of what makes us human.＜br＞
Many early habits, like sucking out thumb, are broken when we are very young. We are either told to stop doing it by our parents, or we consciously or subconsciously observe that others do not have the same habit, and we gradually grow out of it. It is when we intentionally or unintentionally pick up new habits in our later childhood or early adulthood that it becomes a problem. Unless we can break that habit early on, it becomes a part of our life, and becomes "programmed" into our brain.＜br＞
A recent study of human memory suggests that no matter how hard we try to change out habits,it is the old ways that tend to win, especially in situations where we are rushed, stressed or overworked. Habits that we thought we had got rid of can suddenly come back. During the study program, the researchers showed a group of volunteers several pictures, and gave them words to associate with them. They then showed the volunteers the same picture again, and gave them new words to associate with them.＜br＞
A few days later, the volunteers were given a test. The researchers showed them the pictures,and told them to respond with one of the words they had been given for each one. It came as no surprise that their answers were split between the first set of words and second. Two weeks later,they were given the same test again. This time, most of them only gave the first set of words. They appeared to have completely forgotten the second set.＜br＞
The study confirms that theresponses we learn first are those that remain strongest over time.＜br＞
We may try to change out ways, but after a while, the response that comes to mind first is usually the first one we learned. The more that response is used, the more automatic it becomes and the harder it becomes to respond in any other way.＜br＞
The study therefore suggests that over time, our bad habits also become automatic, learned behavior. This is not good news for people who pick up bad habits early in life and now want to change or break them. Even when we try to put new, good intentions into practice, those previous learned habits remain stronger in more automatic, unconscious forms of memory.
Boys usually develop bad habits when they are very young. 查看材料
A.Right
B.Wrong
C.Not mentioned
请根据短文内容，回答题。
Washoe Learned American Sign Language
(1) An animal that influenced scientific thought has died. A chimpanzee named Washoe and born in Africa died of natural causes late last month at the age of 42 at a research center in the American state of Washington. Washoe had become known in the scientific community and around the world for her ability to use American Sign Language. She was said to be the first non-human to learn a human language. Her skills also led to debate3 about primates and their ability to understand language.＜br＞
(2) Research scientists Allen and Beatrix Gardner began teaching Washoe sign language in 1966. In 1969, the Gardners described Washoe&39;s progress in a scientific report. The people who experimented with Washoe said she grew to understand about 250 words. For example, Washoe made signs to communicate when it was time to eat. She could request foods like apples and bananas. She also asked questions like, "Who is coming to play？"＜br＞
Once the news about Washoe spread, many language scientists began studies of their own into this new and exciting area of research. The whole direction of primate research changed.＜br＞
(3) However, critics argued Washoe only learned to repeat sign language movements from watching her teachers. They said she had never developed true language skills. Even now there are some researchers who suggest that primates learn sign language only by memory,and perform. the signs only for prizes. Yet Washoe&39;s keepers disagree. Roger Fours is a former student of the Gardners. He took Washoe to a research center in Ellensburg,Washington. There, Washoe taught sign language to three younger chimpanzees, which are still alive.＜br＞
(4) Scientists like private researcher Jane Goodall believe Washoe provided new information about the mental workings of chimpanzees. Today, there are not as many scientists studying language skills with chimps. Part of the reason is that this kind of research takes a very long time.＜br＞
(5) Debate continues about chimps&39; understanding of human communication. Yet, one thing is sure--Washoe changed popular ideas about the possibilities of animal intelligence.
Paragraph 1 __________ 查看材料
A.Reason why not many scientists carry out this research nowadays
B.Report about Washoe"s progress in leaming sign language
C.General information about Washoe
D.The Gardeners" contributions recognized
E.Debate on chimps" intelligence
F.Washoe"s love for three young chimps
请根据短文内容，回答题。
Black Holes
(1) Black holes can be best described as a sort of vacuum, sucking up everything in space.＜br＞
Scientists have discovered that black holes come from an explosion of huge stars. Stars that are near death can no longer burn due to loss of fuel, and because its temperature can no longer control the gravitational (重力的 ) force, hydrogen ends up putting pressure onto the star&39;s surface until it suddenly explodes then collapses.＜br＞
(2) Black holes come from stars that are made of hydrogen, other gases and a few metals. When these explode it can turn into a stellar-mass (恒星质量) black hole, which can only occur if the star is large enough (should be bigger than the sun) for the explosion to break it into pieces, and the gravity starts to compact every piece into the tiniest particle. Try to see and compare: if a star that&39;s ten times the size of the sun end up being a black hole that&39;s no longer than 70 kilometers, then the Earth would become black hole that&39;s only a fraction of an inch!＜br＞
(3) Objects that get sucked in a black hole will always remain there, never to break free. But remember that black holes can only gobble up (吞噬) objects within a specific distance to it. It&39;s possible for a large star near the sun to become a black hole, but the sun will continue to stay in place. Orbits (轨道) do not change because the newly formed black hole contains exactly the same amount of mass as when it was a star, only this time its mass is totally contracted that it can end up as no bigger than a state.＜br＞
(4)So far, astronomers have figured out that black holes exist because of Albert Einstein&39;s theory of relativity. In the end, through numerous studies, they have discovered that black holes truly exist. Since black holes trap light and do not give off light, it is not possible to detect black holes via a telescope. But astronomers continue to explore galaxies (银河系) , space and the solar system to understand how black holes might evolve. It is possible that black holes can exist for millions of years, and later contribute further process in galaxies, which can eventually lead to creation of new entities. Scientists also credit black holes as helpful in learning how galaxies began to form.
Paragraph 1 __________ 查看材料
A.Is there proof that black holes really exist？
B.What are different types of black holes？
C.How are black holes formed？
D.How were black holes named
E.What happens to the objects around a black hole？
F.What are black holes made of？
请根据短文的内容，回答题。
The Hyper-X
The Hyper-X (超音速飞机) recently broke the record for air-breathing jet planes when it traveled at a hypersonic speed(超音速 )of seven times the speed of sound. That&39;s about 5,000 miles per hour. At this speed, you&39;d get around the world-flying along the equator (赤道 ) in less than 5 hours.＜br＞
The Hyper-X is an unmanned, experimental aircraft just 12 feet long. It achieves hypersonic speed using a special sort of engine known as a scramjet (超音速冲压式喷气发动机) .＜br＞
For an engine to burn fuel and produce energy, it needs oxygen. A jet engine, like those on passenger airplanes, gets oxygen from the air. A rocket engine typically goes faster but has to carry its own supply of oxygen. A scramjet engine goes as fast as a rocket, but it doesn&39;t have to carry its own oxygen supply.＜br＞
A scramjet&39;s special design allows it to obtain oxygen from the air that flows through the engine.＜br＞
And it does so without letting the fast-moving air put out the combustion (燃烧) flames. However, a scramjet engine works properly only at speeds greater than five times the speed of sound.＜br＞
A booster rocket (助推火箭 ) carried the Hyper-X to an altitude of about 100,000 feet for its test flight. The aircraft&39;s record-beating flight lasted just 11 seconds."That brief journey on March 27 makes a major milestone on the way to a new breed of very fast airplanes," says Werner J. A.＜br＞
Dahm of the University of Michigan in Ann Arbor. In the future, engineers predict, airplanes equipped with scramjet engines could transport cargo quickly and cheaply to the brink (边缘) of space. Such hypersonic jets could carry passengers anywhere in the world in just a few hours.＜br＞
Out of the three experimental Hyper-X aircrafts built for NASA, only one is now left. The agency has plans for another 11-second hypersonic flight, this time at 10 times the speed of sound.＜
The Hyper-X broke the record because __________. 查看材料
A.it was the first air-breathing jet plane
B.it flew along the equator
C.it traveled at the speed of sound
D.it reached a speed of about 5，000 miles per hour
请根据短文的内容，回答题。
New Material， New Fashion
The January fashion show, called FutureFashion, exemplified (例证) how far green design has come. Organized by the New York-based non-profit Earth Pledge, the show inspired many top designers to work with sustainable fabrics (迁维) for the first time. Several have since made pledges to include organic fabrics in their lines.＜br＞
The designers who undertake green fashion still face many challenges. Scott Hahn, cofounder with Gregory of Rogan and Loomstate, which uses all-organic cotton, says high-quality sustainable materials can still be tough to find. "Most designers with existing labels are finding there aren&39;t comparable fabrics that can just replace what you&39;re doing and what your customers are used to," he says. For example, organic cotton and non-organic cotton are virtually indistinguishable once woven into a dress. But some popular synthetics, like stretch nylon, still have few eco-friendly equivalents.＜br＞
Those who do make the switch are finding they have more support. Last year the influential trade show Designers & Agents stopped charging its participation fee for young green entrepreneurs (企业家)who attend its two springtime shows in Los Angeles and New York and gave special recognition to designers whose collections are at least 25% sustainable. It now counts more than 50 green designers, up from fewer than a dozen two years ago. This week Wal-Mart is set to announce a major initiative aimed at helping cotton farmers go organic: it will buy transitional (过渡型的) cotton at higher prices, thus helping to expand the supply of a key sustainable material. "Mainstream is about to occur," says Hahn.＜br＞
Some analysts (分析师) are less sure. Among consumers, only 18% are even aware that ecofashion exists, up from 6% four years ago. Natalie Hormilla, a fashion writer, is an example of the unconverted consumer. When asked if she owned any sustainable clothes, she replied,"Not that I&39;m aware of." Like most consumers, she finds little time to shop, and when she does, she&39;s on the hunt for "cute stuff that isn&39;t too expensive". By her own admission, green just isn&39;t yet on her mind. But--thanks to the combined efforts of designers, retailers and suppliers--one day it will be.
What is said about FutureFashion？ 查看材料
A.It inspired many leading designers to start going green
B.It showed that designers using organic fabrics would go far
C.It served as an example of how fashion shows should be organized
D.It convinced the public that fashionable clothes should be made durable
When 5P has a new idea it tries to
A．sell it only in new markets.
B．sell it in markets it already controls.
C．think of different ways of exploiting it.
D．keep it secret as long as possible.
请根据短文的内容，回答题。
Weaving with Light
In the Sierra Madre mountain range of west central Mexico, the native Huichol people live much the way their ancestors did--without electricity. That&39;s because it&39;s too expensive to string power lines to the remote mountain areas where they live. To help support themselves, the Huichol create beautiful artwork. They sell their art in cities hundreds of miles away from their villages.＜br＞
And without electricity--at home or on the road, they can only work during daylight hours. When it gets dark, they must stop whatever they&39;re doing.＜br＞
Now, a team of scientists, designers, and architects is using new technologies to provide the Huichol with light after the sun sets. The scientists&39; technique involves weaving tiny electronic crystals into fabrics that can be made into clothes, bags, or other items.＜br＞
By collecting the sun&39;s energy during the day, these lightweight fabrics provide bright white light at night. Their inventors have named the fabrics "Portable (轻便的) Lights". Portable Lights have the potential to transform. the lives of people without electricity around the world.＜br＞
At the core of Portable Lights technology are devices called high-brightness light-emitting diodes (高亮度法光二极管), or HB LEDs. These tiny lights appear in digital clocks, televisions,and streetlights.＜br＞
LEDs are completely different from the light bulbs(灯泡). Most of those glass bulbs belong to a type called incandescent lights (白炽灯). Inside, electricity heats a metal coil (线圈) to about2,200 degrees Celsius. At that temperature, bulbs give off light we can see. Ninety percent of energy produced by incandescent lights, however, is heat--and invisible. With all that wasted energy, bulbs burn out quickly. They are also easily broken.＜br＞
LEDs, on the other hand, are like tiny pieces of rock made up of molecules (分子) that are arranged in a crystal structure. When an electric current passes through a LED, the crystal structure produces light. Unlike incandescent bulbs, they can produce light of various colors. Within a LED,the type of molecules and their particular arrangement determine what color is produced.
The Huichol don‘t use electricity because __________. 查看材料
A.it is too difficult for them to change their lifestyle
B.they know nothing about it
C.it costs too much to string power lines
D.they don"t need it
A．that
B．than
C．whose
D．which
