The Arizona desert is really dry. Anyone stuck in it without water would die from dehydration(脱水)within three days. Unless, that is, they had one of Omar Yaghi’s next-generation water harvesters. Although daytime humidity(湿度)is only about 10 per cent, this rises to 40 per cent at night, which means there’s enough water in the atmosphere to support life — if it can be changed into liquid form.
That’s exactly what Yaghi’s device does. It’s a box about the size of a small microwave oven designed to suck the humidity from the air at night and turn it into drinking water the next day using only the heat of the sun as its power source. What makes it work is a powder called a metal-organic framework (MOF), which at normal temperatures attracts water molecules (分子) onto its surface. Warm it up and the water is released, each harvest producing one-third of a cup of pure drinking water. “With further improvements, a device, the size of a washing machine, could produce enough water for the basic needs of a household,” says Yaghi, a chemist at the University of California.
One-third of the world’s population lacks safe drinking water; for them such a device could be a lifesaver. But that’s not the limit of the MOF technology.
Just as MOFs can help solve the problem of water shortage, they offer a way of reducing a lot of greenhouse gases. In April this year, the carbon dioxide levels in the atmosphere hit an 800,000-year high, contributing to climate change. Recent research suggests ways that MOFs might be able to help mitigate(缓解)this danger to the Earth’s ecosystem.
An international team led by chemists from the University of Manchester, UK, reported in 2018 that they had developed an aluminum (Al)-based MOF that can selectively and repeatedly remove another gaseous pollutant, nitrogen dioxide (NO2), from the surrounding atmosphere. This discovery could lead to air-related technologies that seize and change large quantities of other gases, such as carbon dioxide, to reduce air pollution.
In 2017, a MOF startup pioneer NuMat Technologies employed MOFs to safely store and deliver dangerous gases. For a given pressure, a tank containing a MOF holds more gas than one without. Or, to put it another way, if a gas tank has a MOF in it, then it does not need to be as highly pressurized in order to hold the same amount of gas, making it safer and less likely to explode, and possible less expensive.
Now, about two dozen companies in the past five years are known to be pursuing MOFs, from small startups to larger chemical and automobile companies. And QYResearch forecasts that the MOF market will grow from $70 million in 2017 to $750 million in 2025. “The potential here is just endless,” says Yaghi. “As cheaper materials come into focus, there will continue to be even more opportunities for commercialization.”
1.MOF changes the sucked humidity into water by ________.
A. lowering the temperature
B. collecting carbon dioxide
C. recycling dangerous gases
D. absorbing the heat of the sun
2.Aluminum-based MOF can be used to _______.
A. reduce greenhouse gases
B. produce household water
C. deliver dangerous gases
D. release water molecules
3.It can be learned that under the same pressure, a tank with a MOF will _______.
A. cost more money B. cause more explosions
C. hold more gases D. afford more crashes
4.The main purpose of this passage is to ______.
A. explain how to use MOF
B. describe the future of MOF
C. persuade people to buy MOF
D. introduce the functions of MOF
高三英语阅读理解困难题查看答案及解析
Disney Lover’s Gift Guide
Want to win the holidays? These unbelievable Disney experiences will become magical gifts sure to impress every Disney fan in your life.
Meet Mickey and Minnie
Not only are Disney ocean trips filled with on-board fun and excellent ports, making them a perfect present, but as soon as you book a Disney ocean trip as a gift, you can schedule a special holiday phone call from Mickey and Minnie to surprise your gift receiver with the news about their special vacation present. Add even more holiday spirit with seasonally themed Very Merry time Ocean Trips and special New Year’s sailings, too.
Long Weekend City Escape
Want to let them relax closer to home? Surprise them with a long weekend getaway to Boston, New York City, or San Francisco with Adventures by Disney. These urban adventures are packed with VIP experiences, awesome accommodations, and best dining. Book before Thanksgiving and they’ll throw in an extra night for free, too.
Holiday Dinner in Paradise
Picture this: A classic Christmas dinner on a beach in Hawaii. Sounds pretty good. Now add live music, local entertainment, and Mickey, Moana and friends in their finest beachwear. You can have the greatest holiday meal your gift receivers will ever eat. It isn’t just about holiday meals, of course. Your gift also comes with soft sand beaches, pools with water slides and lazy rivers, cultural activities, and free kids’ clubs, too.
Safari Style
If you’re looking for the perfect gift for animal lovers, the Wild Africa Trek at Animal Kingdom will make them scream with excitement! A private guided tour of the Safi River Valley provides VIP access to the wild animals as guests ride or walk on a rope bridge on their adventure. They’ll also be treated to safari snacks, a surprise gift, and free photos!
1.According to the passage, a visitor can get a free night’s stay in ______.
A. Meet Mickey and Minnie
B. Long Weekend City Escape
C. Holiday Dinner in Paradise
D. Safari Style
2.Besides great dinner, a visitor can enjoy ______ on Hawaii beach.
A. photos taken for free B. traditional local snacks
C. phone calls from Mickey D. different cultural activities
3.This passage is written to _______.
A. Disney fans B. gift givers
C. foreign visitors D. animal lovers
高三英语阅读理解困难题查看答案及解析
Imagine that you’re looking at your company-issued smartphone and you notice an e-mail from Linkedln: “These companies are looking for candidates like you!” You aren’t necessarily searching for a job, but you’re always open to opportunities, so out of curiosity, you click on the link. A few minutes later your boss appears at your desk. “We’ve noticed that you’re spending more time on Linkedln lately, so I wanted to talk with you about your career and whether you’re happy here,” she says. Uh-oh.
It’s an awkward scene. Attrition (损耗)has always been expensive for companies, but in many industries the cost of losing good workers is rising, owing to tight labor markets. Thus companies are intensifying(增强)their efforts to predict which workers are at high risk of leaving so that managers can try to stop them. Tactics (策略)range from electronic monitor to sophisticated(复杂的)analyses of employees’ social media lives.
Some of this work may be a reason to let employees to quit. In general, people leave their jobs because they don’t like their boss, don’t see opportunities for promotion or growth, or are offered a higher pay; these reasons have held steady for years.
New research conducted by CEB, a Washington-based technology company, looks not just at why workers quit but also at when. “We’ve learned that what really affects people is their sense of how they’re doing compared with other people in their peer group, or with where they thought they would be at a certain point in life, says Brian Kropp, who heads CEB’s HR practice. “We’ve learned to focus on moments that allow people to make these comparisons.”
Technology also provides clues about which star employees might be eyeing the exit. Companies can tell whether employees using work computers or phones are spending time on (or even just opening e-mails from) career websites, and research shows that more firms are paying attention to these things. Large companies have also begun tracking badge swipes(浏览痕迹)---- employees’ use of an ID to enter and exit the building or the parking garage---to identify patterns that suggest a worker may be interviewing for a job.
1.From the first paragraph, we can infer Linkedln is___________.
A. an e-mail B. a job from the Internet
C. a professional social network D. a world-famous company
2.What’s the main idea of the second paragraph?
A. The cost of losing good workers is rising.
B. Companies are stricter with workers than before.
C. Measures have been taken to find the potential workers who want to quit.
D. Finding new jobs has been a trend for most workers.
3.According to the research by CEB, which of the following might be the most probable reason for workers to quit their jobs?
A. They don’t like their bosses. B. Workers are always doing comparisons.
C. Not seeing opportunities for promotion. D. To find a higher-paid job.
4.What is the author’s purpose in writing the text?
A. To make a review on a phenomenon. B. To tell us the leader’s concerns.
C. To show a new trend in the job market. D. To stress the role of new technologies.
高三英语阅读理解困难题查看答案及解析
Every day born a decade from now will have its genetic code(基因编码)mapped at birth, the head of the world’s leading genome sequencing(基因图谱)company has predicted.
A complete DNA read – out for every newborn will be technically possible and affordable in less than five years, promising a revolution in healthcare, says Jay Flatley, the chief executive of Illumina. Only social and legal problems are likely to delay the age of “genome sequences,” or genetic profiles. By 2019 it will have become routine to map infants’ genes when they are born, Dr Flatly told The Times.
This will open a new approach to medicine, by which conditions such as high blood pressure and heart disease can be predicted and prevented and drugs used more safely and effectively.
A baby’s genome can be discovered at birth by a blood test. By examining a person’s genome, it is possible to identify raised risks of developing diseases such as cancers. Those at high risk can then be screened more regularly, or given drugs or dietary advice to lower their chances of becoming ill.
Personal genomes could also be used to ensure that patients get the medicine that is most likely to work for them and least likely to have side – effects.
The development, however, will raise legal concerns about privacy and access to individuals’ genetic records.
“Bad things can be done with the genome. It could predict something about someone – and you could possibly hand the information to their employer or their insurance company.” said Dr Flatley.
“People have to recognize that this horse is out of the barn, and that your genome probably can’t be protected, because everywhere you go you leave your genome behind. Complete genetic privacy, however, is unlikely to be possible”, he added.
As the benefits become clearer, however, he believes that most people will want their genomes read and interpreted. The risk is nothing compared with the gain.
1.In the first two paragraphs, the author mainly wants to tell us about__________.
A. the significant progress in medicine
B. the promise of a leading company
C. the information of babies’ genes
D. the research of medical scientists
2.Which of the following is a problem caused by this approach?
A. The delaying in discovering DNA.
B. The risk of developing diseases at birth.
C. The side effects of medicine on patients.
D. The letting out of personal genetic information.
3.What does the underlined sentence “… this horse is out of the barn” mean?
A. Genetic mapping technique has been widely used.
B. people can’t stop genetic mapping technique advancing.
C. People are eager to improve genetic mapping technique.
D. Genetic mapping technique is too horrible to control.
4.What’s Dr Flatley’s attitude towards the technology?
A. Tolerant. B. Conservative. C. Positive. D. Doubtful.
高三英语阅读理解困难题查看答案及解析
Traditional surgical procedures require surgeons to make large incisions(伤口) in a patient’s body in order to gain access to the internal organs. It was once common for heart surgeons, who perform highly specialized and complex procedures, to make long incisions in a patient’s chest and then split the breastbone to reach the heart. Patients who undergo surgery are often at the risk of infection, as bacteria can infect the cut in the skin. In addition, there is often a lengthy recovery period.
A surgical technique known as “keyhole surgery” has become more common in recent years. In general, the surgeon will make a couple of small incisions around the area where the operation is going to be performed. Tubes are pushed into the holes, and a tiny camera, which is called an endoscope, is put into the body. The camera is attached to a large monitor screen that is positioned so that the doctor can see it while he performs the operation. In addition to the camera, doctors also push their tiny surgical instruments through the tubes. The awkward part of keyhole surgery is that it is counterintuitive; that is to say, if a surgeon wants to move the tool to the left, he or she must push it to the right.
Other advancements in technology are also being used today in the OR (operation room). A new machine called the “da Vinci Surgical System” has been tested in hospitals in the U.S.. Unlike keyhole surgery, the da Vinci’s robot’s moving parts are designed to imitate the natural hand and wrist movement of a surgeon, thus providing better control and sensitivity. The system is controlled by a surgeon from a console(控制台). Sitting at a console a few feet from the patient, the surgeon can perform an operation by holding and moving highly sensitive pads that enable him or her to control the instruments. The area of the body on which the surgeon is working is enlarged on a screen, which is attached to the console. This gives surgeons a realistic three-dimensional view of the area — similar to what they would see during a traditional surgical procedure.
Although the da Vinci Surgical System is undergoing some trials for some procedures, it has been welcomed as revolutionary by many surgeons. Patients with serious illnesses must still undergo major surgery, but the smaller incisions and less invasive procedures typically mean that a shorter recovery time is needed. In some cases, the patient’s stay in the hospital has been cut in half when the da Vinci Surgical System was used. On the downside, some operations have taken up to fifty minutes longer because surgeons are inexperienced at using the new technology. As surgeons become more familiar with the machines, the time needed for surgical procedures is likely to decrease.
1.What can be learned about the traditional surgery according to the passage?
A.The cost of the traditional surgery is very high. |
B.It often leaves a large wound in a person’s body. |
C.Long incisions are made in a patient’s chest. |
D.The incision is often infected after the operation. |
2. Which of the following is one DISADVANTAGE of keyhole surgery?
A.It requires the use of long, thin tools and a tiny camera. |
B.The doctor can not view the inside of the patient’s body clearly. |
C.The direction in which a doctor moves the surgical tools is reversed. |
D.An endoscope has to be inserted into the patient’s body in advance. |
3. The da Vinci Surgical System differs from keyhole surgery in that _______.
A.requires that a surgeon make more small incisions on a patient |
B.reduces the amount of time it takes to perform a surgical procedure |
C.allows the surgeon to use the surgical instruments more sensitively |
D.eliminates the need for surgeons to make large incisions on patients |
4. The passage mainly tells the reader ________.
A.the challenges brought about by new technology |
B.the benefits and drawbacks of the da Vinci Surgical System |
C.the reflections on the development in medical science |
D.the application of new technologies in modern surgery |
高三英语阅读理解困难题查看答案及解析
The Campus Bookstore
Bookie’s, the campus bookstore is located at the Campus Activity Centre, main floor.
Bookie’s is the only place in Kamloops to buy your course textbooks. There is a booklist in the bookstore listing the books required for each course. If you need help in finding your course textbooks, ask any of the staff in the bookstore.
There are more than just textbooks at bookie’s. They carry a wide variety of stationary, art supplies and gift items. You can also buy telephone cards, postage stamps and bus passes. You must show your student card to get a discount for the bus passes.
TEXTBOOK RETURNS
1) Do I need my receipt to return books?
Yes.
2) How long do I have to return books?
Books purchased must be returned within ten working days of the date of the purchase.
3) What if I wrote my name in the book?
Unfortunately, we can not give you a full refund for books not in mint condition as publishers will not accept this for credit.
4) What happens if I miss the last day for return?
We may purchase the text book as “used” in accordance with our Buyback program.
5) What if I discover that my book has missing pages half way through the semester?
We will replace the defective books, new or used, for a like copy of that title. Cash refunds are not given for defective books returned outside the normal return dates. BUYBACKS
1) What books do you buy back?
We buy back all current edition textbooks. If we do not use them at UCC, we buy them back according to the value established in the North American marketplace.
2) How much do I get for my books?
If bookie’s is buying the book for use at UCC, you will receive 50% of the current new retail price. In order to receive optimum buyback price, discs and supplements must accompany the book.
3) What happens to the books that I sell?
Books for bookie’s are processed by our staff and sold to students at 75% of the new retail price.
4) What condition do my books need to be in?
Books should be in good condition, meaning that the cover is still attached and all pages intact. Highlighting, notes and markings on the pages are perfectly fine. Workbooks and study guides are generally not purchased back unless they are free of all markings. No sales receipt is required for these books.
Bookstore Hours
Monday–Thursday 9:00am–6:00pm
Friday 9:00am–5:00pm
Saturday and Sunday Closed
1. The intended readers of this passage are _______.
A.Book dealers | B.University students | C.Publishers | D.Campus staff |
2. The underlined word “defective” can best be replaced by ________.
A.latest | B.adapted | C.new | D.faulty |
3.Bookie’s will not buy back your used textbook if _______.
A.the cover of the book is missing | B.there are markings and notes on the pages |
C.you have lost the sales receipt | D.you miss the last day for return |
4. Which of the following is NOT TRUE according to the passage?
A.Bookie’s is a place for students to buy their course textbooks. |
B.Student cards are needed to get a discount for the textbooks. |
C.Books bought in bookie’s can be returned within ten working days. |
D.Books bought back are processed by the staff and sold to students. |
高三英语阅读理解困难题查看答案及解析
The two-week vacation at the end of summer school ended yesterday. Kevin had gone nowhere during his vacation. He had the money, but he hated to travel alone. He used to take vacations with Gary, his youngest brother, but they had a big argument at the end of their last vacation. Each of them had spent the last three years waiting for the other to apologize.
Kevin did not feel good about being on non-speaking terms with his favorite brother. But he was not going to ask for forgiveness when, in his mind, this whole misunderstanding was his brother’s fault.
So Kevin’s summer vacation was spent in his own “back yard.” As usual, he had planned to clean up his apartment. As usual, two weeks later his apartment looked just as it had two weeks before.
He did do one thing new and different during his vacation. There was a new coffee shop on Foothill Street. It served 25 varieties of delicious coffee at reasonable prices, and the staff was genuinely friendly. The shop was air-conditioned at a slightly chilly temperature. About eight small round tables were inside. Outside were four bigger tables. Each had four white metal chairs around it, and several big umbrellas provided shade. Even on hot afternoons, there was usually a pleasant breeze.
Kevin visited the coffee shop four times during his vacation. He always sat at a table outside by himself and read the free daily paper. Each day he was there, he read most of the newspaper articles while he enjoyed two cups of coffee.
Between articles, he took breaks by watching the nearby traffic and pedestrians. The coffee shop was next to a huge parking lot. The lot was for customers of a grocery store, movie rental store, pharmacy, bank, and restaurant. Kevin considered his outdoor seat the perfect place for one of his favorite activities—people watching.
The coffee shop, with its excellent location and coffee, had helped make his vacation a pleasant one. But he knew in his heart, had his brother been there to join him just one day, his vacation would have been a perfect one.
1. Why didn’t Kevin go anywhere during his vacation?
A.Because he was short of money. | B.Because he didn’t like traveling. |
C.Because he had no company. | D.Because he had to clean up his apartment. |
2. What did Kevin do in his vacation?
A.He cleaned up his apartment. | B.He had a big argument with Gary. |
C.He worked in a parking lot. | D.He stayed at home most of the time. |
3. Which of the following is NOT mentioned about the coffee house?
A.It served delicious coffee of different flavors. |
B.It had an effective air-conditioning system. |
C.It was often crowded with local customers. |
D.It provided free newspapers for customers. |
高三英语阅读理解困难题查看答案及解析
The human beings seem to be facing a crisis (危机). After our best Go players were defeated one by one by the artificial intelligence (AI) AlphaGo, we lost our pride of being at the top of the intelligence chain. And in October, when Saudi Arabia gave citizenship to a robot named Sophia, another privilege of being human was taken away. It looks like everything that separates humans and AI is at risk fight now.
But we keep hoping that instead of "everything", there's still something left in us that makes us irreplaceable.
To Hao Jingfang, winner of the 2016 Hugo Award for Best Novelette, that "something" is our consciousness. "AlphaGo is intelligent in a certain way, but not intelligent enough to ask the important questions -- Do I like playing Go? Do I want to play Go today? Why do I have to play Go when you tell me to?" she once said. In other words, computer programs don't have a choice to say "no". They probably don't even know what a "choice" is -- all they ever do is calculate.
And to He Huaihong, a philosophy (哲学) professor at Peking University, imagination and creativity are also what make us special. "A machine couldn't have come up with the theory of gravity just because it was hit by a falling apple", he said. "It's human imagination that connects what seem to be completely random and irrelevant concepts, something that a machine--which works by fixed rules only--can't do, at least for now."
This is why BBC reporter Viktor Mayer-Schonberger suggested that instead of focusing on how computers have overshadowed us on calculating abilities than humans, we should probably "consider our quality at a different end of the spectrum (光谱):creativity, originality (原创性), even plain illogical craziness, instead of hard-nosed (顽固的) logic", he wrote.
So maybe in the future, as artificial intelligence becomes even more intelligent, humans and A1will learn to use each other's talents for good. If AI can handle the boring tasks like calculating and driving for us, we'll have more time to create, think, and be busy with "being human".
1.What can we learn about AlphaGo, according to Hao Jingfang? ______
A. It will be taught to say no in the future.
B. It will be more intelligent than humans one day.
C. It has difficulty answering personal questions.
D. It is unable to think independently as humans do.
2.What does He Huaihong believe is unique to humans? ______
A. Intelligence. B. Originality.
C. The ability to make rules. D. The ability to make choices.
3.What does the underlined word "overshadowed" in paragraph 5 probably mean? ______
A. Competed with B. Taken control of
C. Been more successful than D. Influenced
4.What could be the future of AI according to the author? ______
A. It will be used to help humans, rather than compete with us.
B. It may develop creativity besides better logical thinking.
C. It might be very dangerous to humans in different fields.
D. It will be applied to provide driving service for humans.
高三英语阅读理解困难题查看答案及解析
Racket, din clamor, noise, whatever you want to call it, unwanted sound is America’s most widespread nuisance. But noise is more than just a nuisance. It constitutes a real and present danger to people’s health. Day and night, at home, at work, and at play, noise can produce serious physical and psychological stress. No one is immune to this stress. Though we seem to adjust to noise by ignoring it, the ear, in fact, never closes and the body still responds—sometimes with extreme tension, as to a strange sound in the night.
The annoyance we feel when faced with noise is the most common outward symptom of the stress building up inside us. Indeed, because irritability is so apparent, legislators have made public annoyance the basis of many noise abatement programs. The more subtle and more serious health hazards associated with stress caused by noise traditionally have been given much less attention. Nevertheless, when we are annoyed or made irritable by noise, we should consider these symptoms fair warning that other thing may be happening to us, some of which may be damaging to our health.
Of many health hazards to noise, hearing loss is the most clearly observable and measurable by health professionals. The other hazards are harder to pin down. For many of us, there may be a risk that exposure to the stress of noise increases probability of disease and infection. The people more likely to be affected may experience noise as a complicating factor in heart problems and other diseases. Noise that causes annoyance and irritability in health persons may have serious consequences for these already ill in mind or body.
Noise affects us throughout our lives. For example, there are indications of effects on the unborn child when mothers are exposed to industrial and environmental noise. During infancy and childhood, youngsters exposed to high noise levels may have trouble falling asleep and obtaining necessary amounts of rest.
Why, then, is there not greater alarm about these dangers? Perhaps it is because the link between noise and many disabilities or diseases has not yet been conclusively demonstrated. Perhaps it is because we tend to dismiss annoyance as a price to pay for living in the modern world. It may also be because we still think of hearing loss as only an occupational hazard.
1.The author’s attitude toward noise would best be described as ___.
A. unrealistic.
B. traditional.
C. concerned.
D. hysterical.
2.Which of the following best states the main idea of the passage?
A. Noise is a major problem and most people recognize its importance.
B. Although noise can be annoying, it is not a major problem.
C. Noise is a major problem and has not yet been recognized as such.
D. Noise is a major problem about which nothing can be done.
3.The author condemns noise essentially because it ___.
A. is against the law.
B. can make some people irritable.
C. is a nuisance.
D. does harm to people’s health.
4.The author would probably consider research about the effects noise has on people to be ___.
A. unimportant.
B. impossible.
C. a waste of money.
D. essential.
高三英语阅读理解困难题查看答案及解析
At the age of twelve years, the human body is at its most vigorous. It has yet to reach its full size and strength, and its owner his or her full intelligence; but at this age the likelihood of death is least. Earlier, we were infants and young children, and consequently more vulnerable; later, we shall undergo a progressive loss of our vigor and resistance which, though imperceptible at first, will finally become so steep that we can live no longer, however well we look after ourselves, and however well society, and our doctors, look after us.
This decline in vigor with the passing of time is called ageing. It is one of the most unpleasant discoveries which we all make that we must decline in this way, that if we escape wars, accidents and disease we shall eventually "die of old age", and that this happens at a rate which differs little from person to person, so that there are heavy odds in favor of our dying between the ages of sixty-five and eighty. Some of us will die sooner, a few will live longer—on into a ninth or tenth decade. But the chances are against it, and there is a virtual limit on how long we can hope to remain alive, however lucky and robust we are.
Normal people tend to forget this process unless and until they are reminded of it. We are so familiar with the fact that man ages, that people have for years assumed that the process of losing vigor with time, of becoming more likely to die the older we get, was something self-evident, like the cooling of a hot kettle or the wearing-out of a pair of shoes. They have also assumed that all animals, and probably other organisms such as trees, or even the universe itself, must in the nature of things "wear out".
Most animals we commonly observe do in fact age as we do, if given the chance to live long enough; and mechanical systems like a wound watch, or the sun, do in fact an out of energy in accordance with the second law of thermodynamics (热力学) (whether the whole universe does so is a moot point at present). But these are not analogous to what happens when man ages. A run-down watch is still a watch and can be rewound. An old watch, by contrast, becomes so worn and unreliable that it eventually is not worth mending. But a watch could never repair itself—it does not consist of living parts, only of metal, which wears away by friction. We could,at one time, repair ourselves—well enough, at least, to overcome all but the most instantly fatal illnesses and accidents. Between twelve and eighty years we gradually lose this power; an illness which at twelve would knock us over, at eighty can knock us out, and into our grave. If we could stay as vigorous as we are at twelve, it would take about 700 years for half of us to die, and another 700 for the survivors to be reduced by half again.
1.Which of the following statements is INCORRECT?
A. Our first twelve years represent the peak of human development.
B. People usually are unhappy when reminded of ageing.
C. Normally only a few of us can live to the eighties and nineties.
D. People are usually less likely to die at twelve years old.
2.The word "it" in the last sentence of Paragraph Two refers to .
A. remaining alive until 65.
B. remaining alive after 80.
C. dying before 65 or after 80.
D. dying between 65 and 80.
3.What do the examples of watch show?
A. Normally people are quite familiar with the ageing process.
B. All animals and other organisms undergo the ageing process.
C. The law of thermodynamics functions in the ageing process.
D. Human's ageing process is different from that of mechanisms.
高三英语阅读理解困难题查看答案及解析