The year is 2094. It has been announced that a comet is heading towards the Eart
题型：不详难度：来源：
The year is 2094. It has been announced that a comet is heading towards the Earth. Most of it will miss our planet, but two pieces will probably hit the southern half of the Earth.
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. |
小题2:When the first piece hits the South Atlantic, it causes .| A．an earthquake | B．damages to cities | | C．an Earth explosion | D．huge waves |
小题3:Why can’t the northern half of the earth escape for long?| 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. |
小题4:By giving the example of dinosaurs, the author tries to prove .| 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 |
|
答案
小题1:B
小题2:D
小题3:B
小题4:D |
解析
试题分析：文章大意：2094年彗星撞击地球，有两片残核会落在地球的南极洲地区，那将会对地球产生灭顶之灾。这会是真的吗？
小题1:B 主旨大意题。根据第一句话时间是在2094年，最后一段Could it really happen?及Will we meet the same end? 说明本文所描述的事故是想象出来的，即答案选B。
小题2:D推断题。 根据文章第二段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.可知，第一片残片撞到南极洲的时候主要引起的是巨大的海浪，所以D正确。
小题3:B 细节题。根据倒数第二段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. 和The sun won’t be seen again for many years. 可以得出答案选B。
小题4:D 推断题。根据最后一段Could it really happen?又举了恐龙灭绝的例子，作者想以此为例证明地球被撞击的这一想象真的有可能会发生。所以D正确。 |
举一反三
The fourth round of heavy smog to hit Beijing in four weeks has sent more people to the hospital with respiratory (呼吸的) illnesses and led to calls for laws to control the pollution.
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 |
小题2:What can we learn from the passage?| 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. |
小题3:Britain is mentioned in the last paragraph to ______.| 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 |
小题4: What’s the best title for this passage？| 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 |
|
When my brother and I were young, my mom would take us on Transportation Days.
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. |
小题2: The underlined word “paralyzed”(in Para.5) is closest in meaning to “________”．| A．displayed | B．justified | C．ignored | D．ruined |
小题3: Which means of transportation does the writer probably disapprove of?| A．Airplane. | B．Subway. | C．Train. | D．Car. |
|
Graduation day is a major accomplishment for anyone in high school. After your whole life in classrooms, though, what will be next? For some people, graduation is the time they ever want to see a again. For others, it is the next step in their education. And the few that are not either way yet will most likely either go on to college or go into the military. There are always a few people in every class that don"t know what to do, if you make a good choice, you will not be one of them.
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.
| 小题1: | | A．costing | B．spending | C．taking | D．paying |
|
| 小题2: | | A．last | B．first | C．only | D．special |
|
| 小题3: | | A．classmate | B．teacher | C．classroom | D．blackboard |
|
| 小题4: | | A．worried | B．afraid | C．glad | D．sure |
|
| 小题5: | | A．learning | B．graduating | C．training | D．cooking |
|
| 小题7: | | A．notice | B．look | C．watch | D．see |
|
| 小题8: | | A．set up | B．turn up | C．take up | D．look up |
|
| 小题9: | | A．either | B．neither | C．both | D．all |
|
| 小题10: | | A．decided | B．chosen | C．planned | D．realized |
|
| 小题11: | | A． parents | B． students | C． teachers | D． friends |
|
| 小题12: | | A．retumed | B．reached | C．went | D．entered |
|
| 小题16: | | A．join | B．take | C．need | D．attend |
|
| 小题17: | | A．factory | B．office | C．shop | D．college |
|
| 小题18: | | A．working on | B．going on | C．keeping on | D．tuming on |
|
| 小题19: | | A．ability | B．talk | C．skill | D．job |
|
| 小题20: | | A．Imagination | B．Education | C．Learning | D．Graduation |
|
|
After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recovers from the activities of the previous day. The rest that you get while sleeping enables your body to prepare itself for the next day.
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 |
小题2:The word drowsy in the last paragraph means ____.| A．sick | B．asleep | C．stand up | D．a little sleepy |
小题3:This passage suggests that not getting enough sleep might make you _____.| A．dream more often | B．have poor health | C．nervous | D．breathe quickly |
小题4:During REM, ____.| A．your eyes move quickly | B．you dream | C．you are restless | D．both A and B |
小题5:The average number of hours of sleep that an adult needs is ______ .| A．approximately six hours | B．around ten hours | | C．about eight hours | D．not described here |
|
How would you like to sleep with one half your brain asleep and the other half awake? Dolphins sleep this way. Recently, scientists at Indiana State University have discovered that ducks sleep this way too. They found that ducks sleep half awake so they can rest and watch for danger at the same time.
After putting their ducks in a row and videotaping them, some researchers found ducks on the end of each row spent more time asleep with one eye open, apparently looking for predators.
“The more the ducks felt threatened, the more they slept with one eye open,” said lead author Niels C. Rattenborg, a graduate student at Indiana State University, Terre Haute. “The unique aspect is not that they do it, but that they control it. When they sleep at the edge of a group, they tend to realize greater danger, so they spend more time sleeping with one half of their brain.” Ducks with one eye open were still awake enough to detect predators, said the authors of the study, which appears today in the journal Nature.
The researchers studied four groups of four ducks held in plastic boxes, which were arranged in a row. Ducks on the end were found to sleep with one eye open 31.8 per cent of the time, compared to 12.4 percent of the time for ducks in the central position.
Also, ducks in the central position did not open one eye more than the others, while ducks on each end kept the eye facing away from the group open 86.2 per cent of the time. Brain wave readings of the ducks showed that the half of the brain receiving signals from the closed eye indicated that half of the brain was sleeping. Signals from the half of the brain receiving signals from the open eye showed a state between fully awake and asleep.
小题1:The under lined word “predator” is most likely to mean .| A．an animal that is likely to be friends with ducks | | B．a human being who looks after and feeds ducks | | C．a scientist who does research work on animals | | D．an animal that hunts, kills and eats other animals |
小题2:Ducks at the end of each row sleep with one eye open because .| A．they are looking for food | | B．they are watching out for danger | | C．they want to enjoy the scenery | | D．they are unique in their sleeping habit |
小题3:Which of the following is true according to the passage?| A．Ducks with one eye open at the edge can still enjoy a certain degree of sleep. | | B．Ducks with less sense of duty usually choose to stay in the center of a row. | | C．Ducks on the northern end of a row would keep their eye facing the south open. | | D．A video tape recorder was the only electronic device used in the experiment. |
|
最新试题
热门考点