题目
题型：不详难度：来源：
The of “a body clock” should not be too since the lives of most living things are controlled the 24 hour night-and-day cycle. We feel and fall asleep at night and become and energetic during the day. If the 24 hour-cycle is , most people experience unpleasant . For example, people who are not to working at night can find that of sleep causes them to badly at work.
the daily cycle of sleeping and , we also have other cycles which longer than one day. Most of us would that we feel good on some days and not so good on ; sometimes our ideas seem to flow and at other times, they do not exist.
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答案
小题1:B
小题2:A
小题3:D
小题4:C
小题5:D
小题6:C
小题7:B
小题8:B
小题9:C
小题10:A
小题11:B
小题12:D
小题13:C
小题14:A
小题15:B
小题16:D
小题17:C
小题18:A
小题19:D
小题20:A
解析
小题1:B 形容词辨析。根据这个发现，他们能够证明在人体内存在生物钟。be anxious to do渴望做某事，此处没有强调科学家的心理活动，故排除。be able to do 能够干某事，所以答案选B。
小题2:A 词义辨析。根据常识及文中第一句we’re built not just of flesh and blood but also of time.可知生物钟是在我们的体内（inside）所以答案选A。
小题3:D 名词辨析。空格上所缺词应与and后面的fall 构成互补关系，即用rise与fall相对，表示起伏。A.运动；B供应； C.使用 D.升起，根据句意生物钟能控制我们体内能量的起伏，选择D。
小题4:C 动词辨析。结合前一句话中的controls可知，生物钟能使我们每天的表现不一样。show 证明，展示，指示；treat对待；change使改变。make+宾语+宾补 使……怎么样。如选change就意为使我们发生变化,与上下文意思不符。所以答案选C。
小题5:D 名词辨析。“生物钟”只是科学家经过研究而得出的一种结论或观点。所以选择D idea。opinion表示个人的看法。
小题6:C 形容词辨析。根据空格后面的原因状语从句“因为大部分生物的生命都受一天24小时循环的控制。”可知“生物钟”这种观点并不令人惊奇（surprising），所以答案选C。其他选项A 困难的 B兴奋的 D有趣的
小题7:B 介词辨析。前面用的是……are controlled 被动形式，只能与by连用。句意：大部分有生命的动物都受到日夜轮回这个时间循环的控制。
小题8:B 形容词辨析。结合常识可知，人工作一天，到晚上应是比较劳累tired。另外，后面的fall asleep 应是由劳累引起的。dreamy多梦的，不应出现在fall asleep之前。
小题9:C 形容词辨析。人休息了一晚上，第二天又充满了生机lovely、和活力energetic。
小题10:A动词辨析。如果时间循环被打乱disturbed，大部分人就会不舒服。A. 打搅 B缩短 C重新设置 D 惹麻烦，所以答案选择A。
小题11:B 名词辨析。结合下一句的例子可知，此处应为人感到不舒服或者说有不愉快的感觉unpleasant feelings。A时候，时刻 B感觉；感情 C感官，意识 D 效果，影响
小题12:D 考查动词辨析。be used to doing something习惯于……。不习惯于在晚上工作的人如果晚上工作，工作就会做不好。其它选项不与doing连用，而是用to do动词不定式。
小题13:C 词意辨析。lack此处为名词，在从句中做主语，lack of sleep缺乏睡眠。B none of 一点没有；D need of 需要，
小题14:A 名词辨析。缺乏睡眠导致第二天工作表现不好。A perform工作；表现 B 表演；显示 C经营；管理 D 掌握；控制
小题15:B 词意辨析。根据后面的also可得知对应的“和……一样”用as well as答案。
小题16:D 动词辨析。人类的日夜循环分为两段时间：即睡眠时sleeping的时间和醒着的时间waking。
小题17:C 动词辨析。根据后面的longer than one day 可知，此处last“持续”。A 重复 B仍然 D发生；碰巧
小题18:A 动词辨析。大部分人都有这种体验，都同意（agree）这种看法。
小题19:D 代词辨析。上文提到了some days与之相对应的是other days即others。
小题20:A 副词辨析。此处just用于否定句中表强调,它们根本就不存在。
核心考点
试题【At the beginning of this century, medical scientists made an interesting discove】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
On 17 July, a piece four kilometers wide enters the Earth’s atmosphere with a massive explosion. About half of the piece is destroyed, but the remaining part hits the South Atlantic at 200 times the speed of sound. The sea boils and a huge hole is made in the sea bed. Huge waves are created and spread outwards from the hole. The wall of water, a kilometer high, rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people drowned.
Before the waves reach South America, the second piece of the comet lands in Argentina. Earthquakes and volcanoes are set off in the Andes Mountains. The shock waves move north into California and all around the Pacific Ocean. The cities of Los Angeles, San Francisco and Tokyo are completely destroyed by earthquakes. Millions of people in the southern half of the Earth are already dead, but the north won’t escape for long. Because of the explosions, the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. The sun won’t be seen again for many years. Wars break out as countries fight for food. A year later, no more than 10 million people remain alive.
Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a piece of object in space. The dinosaurs couldn’t live through the cold climate that followed and they died out. Will we meet the same end?
小题1:What is mainly described in the passage?
| A．A historic discovery. | B．An event of imagination. |
| C．A research on space. | D．A scientific adventure. |
| A．an earthquake | B．damages to cities |
| C．an Earth explosion | D．huge waves |
| A．Because the land is covered with water. |
| B．Because the light and heat from the sun can not reach the Earth. |
| C．Because people there can not live at the temperature of zero. |
| D．Because wars break out among countries. |
| A．animals could not live in the cold climate |
| B．what happened 65 million years ago was an invented story |
| C．the human beings will die out in 2094 |
| D．the Earth could be hit by other objects in space |
Pan Shiyi, a celebrity, said he is planning to propose a Clean Air Act to the local government. As a representative to the Beijing Municipal People"s Congress, he started an online survey at 9:20 a.m. Within three hours, more than 25,000 web users, or 99 percent of total respondents (应答者) , welcomed his proposal.
They have good reasons to stand alongside Pan. The latest round of haze（雾霾）reduced visibility to under 500 meters in many parts of the city. The smog has also led to a great increase in respiratory illnesses, particularly among children and the elderly. Anxious parents and doctors almost all blame the smoggy air for the illnesses. Though most schoolchildren are home for the winter holidays, the bad air can easily move indoors. Besides, ordinary medical masks fail to provide enough protection, so some people have turned to gas masks.
The causes of the frightening smog are rather mysterious, though experts blame too much emissions (排放) and the mountains around Beijing that trap pollution in winter, unless there is enough wind to clear it away. Some critics blamed China’s top two oil firms, China National Petroleum Corp and China Petrochemical Corporation, saying the companies’ outdated production technologies produce large quantities of high-polluting gas fuel.
Meanwhile, some Beijingers have moved their brainstorming discussion to computers. If Pan’s proposal for a Clean Air Act is adopted, netizens say the new law should include items providing for “car-free days” in times of smog, higher standards for vehicle fuel, stricter limit to industrial and engine gas emissions, and more effective protection for the public.
Beijing is not the only city that has ever lost the blue sky. Five days of thick fog caused thousands of deaths in Britain in December 1952, urging the government to pass the first Clean Air Act in 1956, which introduced smokeless zones and cleaner fuels to reduce pollution. That may provide some experience for Beijing to refer to.
小题1:Why did Pan Shiyi started an online survey?
| A．To know the public’s opinions on pollution |
| B．To tell people the danger of the smoggy weather |
| C．To call on people to support his proposal |
| D．To collect supporting evidence for his proposal |
| A．People are clear about the causes of the smoggy weather. |
| B．Children staying indoors will not get respiratory illnesses. |
| C．Smog is worse for people with lower resistance to diseases. |
| D．Masks can give people protection against the smoggy weather. |
| A．suggest Beijing should learn from other countries |
| B．let people know many places have this problem |
| C．tell people the situation in Britain is worse |
| D．call on the government to pass Britain’s Clean Air Act |
| A．The Use of Gas masks and Engines |
| B．Beijingers Call for Clean Air Act |
| C．Effective Protection for Blue Sky |
| D．The Mysterious Causes of the Scary Smog |
It goes like this: You can"t take any means of transportation more than once. We would start from home, walking two blocks to the rail station. We"d take the train into the city center, then a bus, switching to the train, then maybe a taxi. We always considered taking a horse carriage in the historic district, but we didn"t like the way the horses were treated, so we never did. At the end of the day, we took the subway to our closest station, where Mom"s friend was waiting to give us a ride home—our first car ride of the day.
The good thing about Transportation Days is not only that Mom taught us how to get around. She was born to be multimodal (多方式的). She understood that depending on cars only was a failure of imagination and, above all, a failure of confidence—the product of a childhood not spent exploring subway tunnels.
Once you learn the route map and step with certainty over the gap between the train and the platform, nothing is frightening anymore. New cities are just lightrail lines to be explored. And your personal car, if you have one, becomes just one more tool in the toolbox—and often an inadequate one, limiting both your mobility and your wallet.
On Transportation Days, we might stop for lunch on Chestrut Street or buy a new book or toy, but the transportation was the point. First, it was exciting enough to watch the world speed by from the train window. As I got older, my mom helped me unlock the mysteries that would otherwise have paralyzed my first attempts to do it myself: How do I know where to get off? How do I know how much it costs? How do I know when I need tickets, and where to get them? What track, what line, which direction, where"s the stop, and will I get wet when we go under the river?
I"m writing this right now on an airplane, a means we didn"t try on our Transportation Days and, we now know, the dirtiest and most polluting of them all. My flight routed me through Philadelphia. My multimodal mom met me for dinner in the airport. She took a train to meet me.
小题1: According to the writer, what was the greatest benefit of her Transportation Days?
| A．Building confidence in herself. |
| B．Reducing her use of private cars. |
| C．Developing her sense of direction. |
| D．Giving her knowledge about vehicles. |
| A．displayed | B．justified | C．ignored | D．ruined |
| A．Airplane. | B．Subway. | C．Train. | D．Car. |
Some of those people that decide that they never want to a classroom again will most likely some sort of simple jobs. Others will either find a way aside from school to better themselves, through travel or giving back to the community.
High school graduates that already have their futures 0ut are pretty rare. They are the who have been preparing for college from the first day that they high school. They most likely applied early to the schools that they were interested and have already dedicated themselves to the career they want. Most of them will become doctors, lawyers, and business people, etc.
The last group of people is the biggest. It is the students who _ know that they want to do something but have no idea what. Some of them will _ the military and proudly serve our country. Others will go on t0 , take basic courses, and then decide what they want to major in. There will be some students even to a technical school to learn a specific that they can contribute to the workforce. is a stepping stone that can lead you on to better things if you will let it.
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There are four levels of sleep, each being a little deeper than the one before. As you sleep, your muscles relax little by little. Your heart beats more slowly, and your brain slows down. After you reach the fourth level, your body shifts back and forth from one level of sleep to the other.
Although your mind slows down, from time to time you will dream. Scientists who study sleep state that when dreaming occurs, your eyeballs begin to move more quickly (Although your eyelids are closed). This stage of sleep is called REM, which stands for rapid eye movement.
If you have trouble falling asleep, some people recommend breathing very deeply. Other people believe that drinking warm milk will help make you drowsy. There is also an old suggestion the counting sheep will put you to sleep!
小题1:A good title for this passage is ____.
| A．Sleep | B．Dreams | C．Good Health | D．Work and Rest |
| A．sick | B．asleep | C．stand up | D．a little sleepy |
| A．dream more often | B．have poor health | C．nervous | D．breathe quickly |
| A．your eyes move quickly | B．you dream | C．you are restless | D．both A and B |
| A．approximately six hours | B．around ten hours |
| C．about eight hours | D．not described here |
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