单选题He always did well at school in spite of taking a part - time job.A. despiteB. regardless ofC. on account ofD. in case of

单选题Steep stairs can present a particular hazard to older people.

单选题It is the movement, not the color, of objects that excites the bull A．frightens B．scares C．arouses D．confuses

单选题Although South Carolina's mineral resources are abundant, not all of them can be mined lucratively.

单选题The trumpet was part of the opera orchestra long before it became a standard orchestral instrument.

单选题Pushbike Peril Low speed bicycle crashes can badly injure —or even kill —children if they fall onto the ends of the handlebars so a team of engineers is redesigning the humble handlebar in a bid to make it safer. Kristy Arbogast, a bioengineer at the Children's Hospital of Philadelphia in Pennsylvania, began the project with her colleagues after a study of serious abdominal injuries in children in the past 30 years showed that more than a third were caused by bicycle accidents. "The task was to identify how the injuries occurred and came up with some countermeasures," she says. By interviewing the children and their parents, Arbogast and her team were able to reconstruct many of the accidents and identified a common mechanism responsible for serious injures. They discovered that most occur when children hit an obstacle at a slow speed, causing them to topple over. To maintain their balance they turn the handlebars through 90 degrees — but their momentum forces them into the end of the handlebars. The bike then falls over and the other end of the handlebars hits the ground, ramming it into their abdomen. The solution the group came up with is a handgrip fitted with a spring and damping system. The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact. The group hopes to commercialize the device, which should add only a few dollars to the cost of a bike. "But our task has been one of education because up until now, bicycle manufacturer were unaware of the problem," says Arbogast. The team has also approached the US Consumer Product Safety Commission to try to persuade manufacturers to adopt the new design. A decision is expected later this year. handlebar n (常用复数) (自行车等的) 车把 abdominal adj. 腹部的 redesign v. 重新设计 bioengineer n. 生物工程师 reconstruct vt. 重建；重构 countermeasure n. 对策 abdomen n. 膜，腹部 momentum n.冲力 handgrip n. 握柄 damping adj. 制动的，减速的，缓冲的 commercialize vt. 使商品化

单选题Even Intelligent People Can Fail 1 The striking thing about the innovators who succeeded in making our modern world is how often they failed．Turn on a light，take a photograph，watch TV，search the web，jet across the Pacific Ocean，talk on a cellphone(手机)．The innovators who left us these things had to find the way to success through a maze(错综复杂)of wrong tarns． 2 we have just celebrated the 125th anniversary of American innovator Thomas Edison’s success in heating a thin line to white．hot heat for 14 hours in his lab in New Jersey，US．He did mat on October 22．1879．and followed up a month later by keeping a thread of common cardboard alight(点亮着的)in an airless space for 45 hours．Three years later he went on t0 light up half a square mile of downtown Manhattan，even though only one of the six power plants in his design worked when he tamed it on，on September 4，1882． 3 “Many of 1ife’s failures．”the supreme innovator said．“are people who did not realize how close they were to Success when they gave up”Before that magical moment in October 1879．Edison had worked out no fewer than 3，000 theories about electric light，but in only two cases did his experiments work． 4 No one likes failure．but the smart innovators 1earn from it Mark Gumz,the head of the camera maker Olympus America Inc，attributes some of the company’s successes in technology to understanding failure．His popular phrase is：“Y0n only fail when you quit．” 5 Over two centuries．the most common quality of the innovators has been persistence That is another way of saying they had the emotional ability to keep up what they were doing．Walt Disney,the founder of Disneyland，was so broke after a succession of financial failures that he was left shoeless in his office because he could not afford the US$1．50 to get his shoes from me repair shop Pioneering car maker Henry F0rd failed with one company and was forced out of another before he developed the Model T car． 6 Failure is harder to bear in today’s open．accelerated world．Hardly any innovation works the first time．But an impatient society and the media want instant success．When American music and movie master David Geffen had a difficult time．a critic said nastily that the only difference between Geffen Records(Geffen’s company)and the Titanic(the ship that went down) was that the Titanic had better music Actually，it wasn’t．After four years of losses，Geffen had 80 many hits(成功的作品)he could afford a ship as big as the Titanic an to himself．

单选题This passage mentions all of the following causes for the extinction of many species EXCEPT

单选题The recession may have spread across the global economy, but recovery efforts haven't taken the edge off the mortgage meltdown (熔毁) that helped start it all. In fact, many American real estate markets may be at risk of even worse declines. What does the author say about the present recession?A. It has affected the global economy.B. Recovery efforts have functioned.C. It was triggered by mortgage crash.D. It is similar to the one in 2001.

单选题He was said to have been removed from the position of manager for a recent conflict wil an important customer. A. dismissed B. released C. picked D. exposed

单选题From my standpoint, you know, this thing is just funny.A. positionB. point of viewC. knowledgeD. opinion

单选题He would not give up though he realized that people would not regard him as a lawful king.

单选题Fields neighboring the nuclear plant are higher than regular levels of radioactivity.

单选题 Teaching Poetry No poem should ever be discussed or "analyzed", until it has been read aloud by someone, teacher or student. Better still, perhaps, is the practice of reading it twice, once at the beginning of the discussion and once at the end, so the sound of the poem is the last thing one hears of it. All discussions of poetry are, in fact, preparations for reading it aloud, and the reading of the poem is, finally, the most telling "interpretation" of it, suggesting tone, rhythm, and meaning all at once. Hearing a poet read the work in his or her own voice, on records or on film, is obviously a special reward. But even those aids to teaching can not replace the student and teacher reading it or, best of all, reciting (背诵) it. I have come to think, in fact, that time spent reading a poem aloud is much more important than "analyzing" it, if there isn't time for both. I think one of our goals as teachers of English is to have students love poetry. Poetry is "a criticism of life", and "a heightening (提升) of life". It is "an approach to the truth of feeling", and it "can save your life". It also deserves a place in the teaching of language and literature more central than it presently occupies. I am not saying that every English teacher must teach poetry. Those who don't like it should not be forced to put that dislike on anyone else. But those who do teach poetry must keep in mind a few things about its essential nature, about its sound as well as its sense, and they must make room in the classroom for hearing poetry as well as thinking about it.

单选题 Help Your Child Become a Reader Encouraging early reading skills can build a path to a lifelong (终身的) love of reading and can help your child get a head start in school. While reading to your child is still the most important thing you can do to build reading skills, there are many techniques that can help. Make reading fun. Play games with your child as you read. Many traditional children's games can be adapted to encourage reading skills. While reading or during play, tell your child, "I spy with my little eye, something that begins with the letter b." Help the child find something on the page or in the room that begins with that letter. For example, "I see a barn." This can also be used to teach beginning letter sounds. "I spy with my little eye, something that begins with the sound 's'." Help the child find a word that begins with the "s" sound. In this variation on the popular game, instruct the child that, "Simon says, point to something that starts with the letter n.'" The child can then find an object in the room or a body part, such as the nose, that starts with the letter presented. This can also be used to teach beginning sounds. Make a game out of rhyming (押韵) words by making up silly words to rhyme with the child's name or favorite toys. This sets the stage for rhyming real words by showing the child the similarities of sounds. As the child masters making up the words, begin rhyming real words to one another. Tips to raise a successful reader: Put books in places where the child plays. If books are easily accessible, children are more likely to pick them up. Let children "read to you" by looking at pictures. Making up stories to go along with illustrations helps children discover how words relate to pictures. Take books along on trips or even short visits to the doctor's office or grocery store. Have children help you shop. Reading grocery lists and looking for specific items helps build sight vocabulary.

单选题Glaciers are a possible source of fresh water that has been overlooked until recently. Three quarters of the Earth's fresh water supply is still tied up in glacial ice, a reservoir of untapped fresh water so immense that it could sustain all the rivers of the world for 1,000 years. Floating on the oceans are 7,659 trillion metric tons of ice encased in 10,000 icebergs that break away from the polar ice caps, more than ninety percent of them from Antarctica. How much fresh water is tied up in glacial ice?A. 75 % of the Earth's fresh water supply.B. 90% of the Earth's fresh water supply.C. Enough to support human beings for 1,000 years.D. As much as the water from 10,000 trillion metric tons of ic

单选题In the process, the light energy converts to heat energy.A. leavesB. dropsC. reducesD. changes

单选题The 1960's saw a change in the form and content of movies, treating subjects that for so many years were considered {{U}}taboo{{/U}}.

单选题He is assigned to Uoversee/U the production of the assembly lines.

单选题My father is a physician .