题目
题型：不详难度：来源：
The car is made mainly of renewable materials, like plants and vegetables. The structure around the car is made from natural plant fibers and potatoes. The steering wheel(方向盘) is made from root vegetables like carrots. The engine uses bio-fuel made from vegetable oil and waste chocolate.
The new racing car is extremely fast. The car has a top speed of two hundred fifteen kilometers an hour. And it can go from zero to ninety-five kilometers an hour in just two and a half seconds. The racing car meets all of the Formula Three racing requirements except for its biodiesel(生物柴油) engine.
Automobile racing is one of the most widely watched sports in the world. But it is also considered one of the least friendly sports to the environment. Racing cars burn a lot of fuel, and create a lot of air pollution. In recent years, the racing industry has taken steps to protect the environment. More racing companies are now producing cars that use less energy. These cars produce less pollutio
n than cars that depend on traditional fuel, like gasoline.Last month, the new racing car was set to run in its first competitive race at the Formula Three Championship Final at Brands Hatch. It would have been the first biodiesel-powered car to race at Formula Three. Current Formula Three rules let only gasoline-powered car to compete. Officials needed permission from all of the Formula Three racers for the biodiesel-powered car to compete. They were unable to contact one of the drivers, so the new racing car didn’t appear in the event. In test runs, the new racing car was the fifth fastest among the Formula Three race cars. Supporters are hoping to have the fuel problem solved in time to compete in the next season.
小题1:. What’s the second paragraph mainly about?
| A．What materials the new racing car is made of. |
| B．Why researchers built the new racing car. |
| C．The characteristics of the new racing car. |
| D．The process of the new racing car being designed. |
requirements.
| A．speed | B．appearance | C．weight | D．engine |
| A．the new racing car is the first environmentally friendly car |
| B．automobile racing could be forbidden in the near future |
| C．many people like to watch automobile racing |
| D．the new racing car will be allowed to compete in the next season of Formula Three racing |
| A．burn more fuel | B．go more quickly |
| C．produce less pollution | D．cost less money |
| A．Because the new racing car still needs testing. |
| B．Because officials needed each racer’s permission but failed to contact one. |
| C．Because there’re some technical problems to be solved. |
| D．Because few drivers think it is fast enough. |
答案
小题1:.A
小题1:.D
小题1:.C
小题1:.C
小题1:.B
解析
核心考点
试题【Researchers in Britain are driving the environmental movement to a new level. A 】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Joan Mclean think so. In fact, Mclean, a professor of physics at Mountain University in Range, feels so strongly about this matter that she’s developed a course on the topic. In addition to learning “who” invented “what”, however, Mclean also likes her students to learn the answers to the “why” and ”how” questions. According to Mclean,” When students learn the answers to these questions, they are better prepared to recognize opportunities for inventing and more motivated to give inventing a try.”
So, just what is the story behind the windshield wiper? Well, Mary Anderson came up with the idea in 1902 after a visit to New York City. The day was cold and stormy, but Anderson still wanted to see the sights, so she jumped aboard a streetcar. Noticing that the driver was struggling to see through the snow covering the windshield, she found herself wondering why there couldn’t be a built-in device for cleaning the window. Still wondering about this when she returned home to Birmingham, Alabama, Anderson started drafting out solutions. One of her ideas, a lever(操作杆)on the inside of a vehicle that would control an arm on the outside, became the first windshield wiper.
Today we benefit from countless inventions and innovations，It’s hard to imagine driving without Garrett A. Morgan’s traffic light. It’s equally impossible to picture a world without Katherine J. Blodgett’s innovation that makes glass invisible, Can you picture life without clear windows and eyeglasses?
小题1:By mentioning “traffic light” and “windshield wiper”, the author indicates that countless inventions are .
| A．beneficial, because their inventors are famous |
| B．beneficial, though their inventors are less famous |
| C．not useful, because their inventors are less famous |
| D．not useful, though their inventors are famous |
| A．add colour and variety to students’ campus life |
| B．inform students of the windshield wiper’s invention |
| C．carry out the requirements by Mountain University |
| D．prepare students to try their own invention |
| A．not eventually accepted by the umbrella producer |
| B．inspired by the story behind the windshield wiper |
| C．due to his dream of being caught in a rainstorm |
| D．not related to Professor Joan McLean’s lectures |
A How to Help Students to Sell Their Inventions to Producers?
B How to Design a Built-in Device for Cleaning the Window?
C Shouldn’t We Know Who Invented the Windshield Wiper?
D Shouldn’t We Develop Invention Courses in Universities?
The project, called Hywind, is the world’s first large-scale deepwater wind turbine(涡轮发电机).Although it uses a fairly standard 152-ton,2.3-megawatt turbine, Hywind represents totally new technology. The turbine will be fixed 213 feet above the water on a floating spar(see picture),a technology Hywind’s creator, the Norwegian company StatoilHydro, has developed recently. The steel spar, which is filled with stones and goes 328 feet below the sea surface, will be tied to the ocean floor by three cable(缆索)；these will keep the spar stable and prevent the turbine from moving up and down in the waves. Hywind’s stability(稳定性)in the cold and rough sea would prove that even the deepest corners of the ocean are suitable for wind power. If all goes according to plan, the turbine will start producing electricity six miles off the coast of southwestern Norway as early as September.
To produce electricity on a large scale, a commercial wind farm will have to use bigger turbines than Hywind does, but it’s difficult enough to balance such a large turbine so high on a floating spar in the middle of the ocean. To make that turbine heavier, the whole spar’s to design a new kind of wind turbine, one whose gearbox(变速箱) sits at sea level rather than behind the blades (see picture )
Hywind is a test run, but the benefits for perfecting floating wind-farm technology could be extremely large. Out at sea, the wind is often stronger and steadier than close to shore, where all existing offshore windmills are planted. Deep-sea farms are invisible from land, which helps overcome the windmill-as-eyesore objection. If the technology catches on, it will open up vast areas of the planet’s surface to one of the best low-carbon power sources available.
小题1:The Hywind project uses totally new technology to ensure the stability of _______.
| A．the cables which tie the spar to the ocean floor |
| B．the spar which is floating in deep-sea water |
| C．the blades driven by strong and steady sea wind |
| D．the stones filled in the spar below the sea surface |
| A．on the sea floor | B．on the spar top |
| C．at sea level | D．behind the blades |
| A．solve the technical problems of deepwater windmills |
| B．make financial profits by producing more turbines |
| C．settle the arguments about environmental problems |
| D．explore low-carbon power resources available at sea |
The discovery was made by researchers at York and Harvard universities when they were examining the genetic relationship between the ancient woolly mammoth and mastodon to modern elephants—the Asian elephant, African forest elephant and African savanna elephant
Once they obtained DNA sequences (序列) from two fossils (化石)，mammoths and mastodons the team compared them with DNA from modern elephants. They found to their amazement that modern forest and savanna elephants are as distinct from each other as Asian elephants and mammoths.
The scientists used detailed genetic analysis to prove that the African savanna elephants and the African forest elephants have been distinct species for several million years. The divergence of the two species took place around the time of the divergence of Asian elephants and woolly mammoths. This result amazed all the scientists.
There has long been debate in the scientific community that the two might be separate species but this is the most convincing scientific evidence so far that they are indeed different species.
Previously, many naturalists believed that African savanna elephants and African forest elephants were two populations of the same species despite the elephants’ significant size differences. The savanna elephant has an average shoulder height of 3.5metres while the forest elephant has an average shoulder height of 2.5metres. The savanna elephant weighs between six and seven tons, roughly double the weight of the forest elephant. But the fact that they look so different does not necessarily mean they are different species. However, the proof lay in the analysis of the DNA.
Alfred Roca, assistant professor in the department of Animal Sciences at the University of Minois, said, “We now have to treat the forest and savanna elephants as two different units for conservation purpose. Since 1950 all African elephants have been conserved as one species. Now that we know the forest and savanna elephants are two very distinct animals, the forest elephant should become a bigger priority (优先)for conservation purpose .”
小题1:One of the fossils studied by the researchers is that of ________.
| A．the Asian elephant | B．the forest elephant |
| C．the savanna elephant | D．the mastodon elephant |
| A．evolution | B．exhibition | C．separation | D．examination |
| A．DNA | B．height | C．weight | D．population |
| A．The conversation of African elephants. |
| B．The purpose of studying African elephants |
| C．The way to divide African elephants into two units |
| D．The reason for the distinction of African elephants |
| A．Naturalist’s Belief about Elephants. |
| B．Amazing Experiment about Elephants |
| C．An Unexpected Finding about Elephants |
| D．A Long scientific Debate about Elephants |
Recently, two researchers, Jose Millan and Michele Tavella from the Federal Polytechnic school in Lausanne, Switzerland, demonstrated（展示）a small robotic wheelchair directed by a person’s thoughts.
In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right band. He could even talk as he watched the vehicle and guided it with his thoughts.
“our brain has billions of nerve ceils. These send signals through the spinal cord （脊髓）to the muscles to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the muscles,” Tavella says. “Our system allows disabled people to communicate with external world and also to control devices.”
The researchers designed a special cap for the user. This head cover picks up the signals from the scalp(头皮) and sends them to a computer. The computer interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.
Prof. Millan, the team leader, says scientists keep improving the computer software that interprets brain signals and turns them into simple commands. “The practical possibilities that BCI technology offers to disabled people can be grouped in two categories: communication, and controlling devices. One example is this wheelchair.”
He says his team has set two goals. One is testing with real patients, so as to prove that this is a technology they can benefit frotn. And the other is to guarantee that they can use the technology over long periods of time.
小题1:
BCI is a technology that can
| A．help to update computer systems | B．link the human brain with computers |
| C．help the disabled to recover | D．control a person"s thoughts |
How" did Tavella operate the wheelchair in the laboratory?
| A．By controlling his muscles. | B．By talking to the machine. |
| C．By moving his hand. | D．By using his mind. |
Which of the following shows the path of the signals described in Paragraph 5?
| A．scalp→computer→cap→wheelchair |
| B．computer→cap→scalp→wheelchair |
| C．scalp→cap→computer→wheelchair |
| D．cap→computer→scalp→wheelchair |
The team will test with real patients to
| A．make profits from them | B．prove the technology useful to them |
| C．make them live longer | D．learn about their physical condition |
Which of the following would be the best title for the text?
| A．Switzerland, the BCI Research Center |
| B．New Findings About How the Human Brain Works |
| C．BCI Could Mean More Freedom for the Disabled |
| D．Robotic Vehicles Could Help to Cure Brain Injuries |
Joining in the churs at times. So is howling a way to strcagthen a social boad or just a way to reconfirm status among its members? ——Why do welves howl for sure?
What is cleat, however, is that howling is often used among packmates to locate each other. Hunting grounds are distant and it happens that woloves may separate from one another at times. When this happens, howling appcars to be an ercellent means of gathering.
Howling, interestingly, is a contagious behaviour. When one wolf starts to howl, very likely others will follow. This is often seen to occat in the morning, as if wolves were doing some sotr of “roll rall”where wolves all howl togeter to howl, very likely others will follow. This is often seen to occar in the morning, as if wolves were doing w some sotr of “roll call”where wolves all howl together to repotr their pteence.
小题1:.What the por similarity between wolves’ how humaes ting in chorus?
| A．The act of calling each other. |
| B．the sense of accomplishment. |
| C．The act of hunting for something. |
| D．The sense of belonging to a group. |
| A．Wolves separate from each other after howling. |
| B．Wolves tend to protect their hunting grounds. |
| C．Wolves sometimes have quarrels after howling together. |
| D．Wolves of low rank are encouraged to join in the chorus. |
| A．show their ranks |
| B．find their companion |
| C．report the missing ones |
| D．express their lonelingess |
| A．howling is a signal for hunting |
| B．howling is a way of communication |
| C．howling aften occurs in the morning |
| D．howling spreads from one to another |
最新试题
- 1材料一：《中华人民共和国未成年人保护法》第33条规定：国家采取措施，预防未成年人沉迷网络。国家鼓励研究开发有利于未成年人
- 2下列各项中字音不正确的一项是：（ ）A．浮(fú)躁付梓(zǐ) 按捺(nà)B．奈(nài)何浸渍(jìn zé)债(
- 3一倾角为的斜面固定于地面，斜面顶端离地面的高度h0=1m，斜面底端有一垂直于斜面的固定挡板。在斜面顶端自由释放一质量m=
- 45个红球，4个白球，2个黑球放入一个不透明的袋子里，从中摸出10个球，恰好红球、 白球、黑球都摸到，这件事情[
- 5—What is your sister doing now?—She is talking _______ the p
- 6有些真菌可以产生***死某些致病细菌的物质，这些物质叫___________。
- 7工业上通常在恒容密闭容器中采用CO(g)和H2 (g)反应催化合成甲醇CH3OH(g)：（1）已知：① 2CO(g) +
- 8直线y=k（x﹣2）+4与曲线有两个交点，则实数k的取值范围为（ ）．
- 9在溶液中可以大量共存，加OH－产生沉淀，加H+生成气体的一组离子是A．Na+、Cu2+、CO32－、Cl－ B．Na
- 10读某市某日气温变化曲线图，回答下列问题。小题1:从图中可见，该地一天中最高气温出现在 A．正午12时B．日出前后C．子夜
热门考点
- 1（1）常言道“顾客就是上帝”，那么是否应该像图中的“上帝”这个样子？“上帝”在消费时应该怎样？_____________
- 2I had a little trouble ______English grammar. [ ]A. t
- 3已知N5AsF6是离子化合物，其中阳离子是N5+。下列叙述错误的是（ ）A．N5+具有34个电子B．N5+中氮-氮之
- 4【题文】句子仿写（2分）朋友是什么？朋友是快乐日子里的一把吉他，尽情地为你弹奏生活的愉悦。朋友是
- 5阅读下面的文字，完成小题。新闻现场魏柏林吴贵平因抢救落水小学生被村长知道了，村长报给了镇里，镇里请来了本市电视台的摄像记
- 6自2010年10月1日起，我国对个人购买普通住房，且该住房属于家庭唯一住房的，减半征收契税；对个人购买90平方米及以下普
- 7如图所示，闭合电键S，电压表的示数为U，电流表的示数为I，现向左调节滑动变阻器R的触头P，下列说法正确的是]A．I 变大
- 8有氧气、氮气、空气、二氧化碳四瓶无色气体，现将它们一一鉴别出来，进行了如下操作，请把内容补充完整．实验步骤实验现象实验结
- 9某件商品原价是a元，连续两次降价15%后是（ ）A．（a-2×15%）元B．（a-2×15%a）元C．2a（1-15%
- 10正常男性体细胞的染色体组成是（ ）A．23对+XB．23对+YC．22对+XXD．22对+XY