BA 17-year-old boy, caught sending text messages in class, was recently sent to the vice principal's office at Millwood High School in Halifax, Nova Scotia. The vice principal, Steve Gallagher, told t 题目和参考答案——青夏教育精英家教网—

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B
A 17-year-old boy, caught sending text messages in class, was recently sent to the vice principal's office at Millwood High School in Halifax, Nova Scotia. The vice principal, Steve Gallagher, told the boy he needed to focus on the teacher, not his cellphone. The boy listened politely and nodded, and that's when Mr. Gallagher noticed the student's fingers moving on his lap. He was texting while being scolded for texting. “It was a subconscious act,” says Mr. Gallagher, who took the phone away. “Young people today are connected socially from the moment they open their eyes in the morning until they close their eyes at night. It's compulsive.”
A study this year by psychology students at Covenant College in Lookout Mountain, Ga., found that the more time young people spend on Facebook, the more likely they are to have lower grades and weaker study habits. Heavy Facebook users show signs of being more socialable, but they are also more likely to be anxious, hostile or depressed. (Doctors, meanwhile, are now blaming addictions to 'night texting' for disturbing the sleep patterns of teens.)
Almost a quarter of today's teens check Facebook more than 10 times a day, according to a 2009 survey by Common Sense Media, a nonprofit group that monitors media's impact on families. Will these young people get rid of this habit once they enter the work force, or will employers come to see texting and 'social-network checking' as accepted parts of the workday?
Think back. When today's older workers were in their 20s, they might have taken a break on the job to call friends and make after-work plans. In those earlier eras, companies discouraged non-business-related calls, and someone who made personal calls all day risked being fired. It was impossible to imagine the constant back-and-forth texting that defines interactions among young people today.
Educators are also being asked by parents, students and educational strategists to reconsider their rules. “In past generations, students got in trouble for passing notes in class. Now students are adept at texting with their phones still in their pockets,” says 40-year-old Mr. Gallagher, the vice principal, “and they're able to communicate with someone one floor down and three rows over. Students are just fundamentally different today. They will take suspensions rather than give up their phones.”
46. The underlined word “a subconscious act” refers to an act __________.
A. on purpose     B. without realization        C. in secret         D. with care
47. Young people addicted to the use of Facebook _________.
A. are good at dealing with the social relationships and concentrate on their study
B. have high spirits and positive attitudes towards their life and work
C. have been influenced mentally in the aspects of behaviors and habits
D. are always in bad mood and have poor performance in every respect
48. Through the situation of today’s older workers in their 20s, it can be inferred that ___________.
A. the employers will not accept young people’s sending text messages
B. a cellphone is a must for today’s older workers instead of young people
C. the employers prefer older workers to young people
D. the employers will find it hard to control the interaction among young people
49. Mr. Gallagher reminds us that the students in the past and those today _________.
A. like to break rules and have the same means of sending messages
B. are always the big problem for the educators and their parents
C. like sending text messages but those today do it in a more secret and skillful way
D. cannot live without a cellphone
50. What’s the best title of the passage?
A. Teenagers and Cellphones                       B. Teenagers’ Texting Addiction
C. Employers and Teenagers                        D. Teenagers’ Education

46—50 BCDCB

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科目：高中英语 来源：不详 题型：阅读理解

When a storm is coming, most people leave the area as quickly ad possible and head for safety. But there are a few people who will get into their cars and go straight for the center of the storm. These people are willing to risk(冒…危险)being killed by floods or 100-kilometer-an-hour winds for the excitement of watching the storm close up.
“Storm chasing(追逐)” is becoming an increasingly popular hobby(喜好), especially in the Midwest of the United States, where there are frequent storms between March and July. A storm chaser begins the day by checking the Internet for the latest weather reports, and then drives up to 1,000 kilometers to where the storm will be and waits for it to develop.
Although anyone can do it , storm chasing is extremely dangerous. The power of a big storm can throw a cow into the air or destroy a whole house in seconds. Storm chasers are also often hurt in accidents caused by driving in a heavy rain. If you are a beginner, it is much safer to join a group for storm-chasing vacations during the storm season.
Even then, storm chasing is not all adventure and excitement . “Storm chasing is 95% driving,” says Daniel Lynch, who spends most of his summer storm-chasing.    “Sometimes you can sit around for hours waiting for something to happen, and all you get is blue sky and a few light showers.”
However, for storm chasers, it is all worth it. “When you get close to a storm, it is the most exciting sight you will ever see in your life,” says Jasper Morley. “Every storm is an example of the power of nature, It is the greatest show on Earth.”
56. For storm chasing, the first thing storm chasers do is to          .
A. head straight for the center of the storm B. get into the car for safety
C. wait patiently for the storm to develop    D. collect information about a coming storm
57. Beginners of storm chasing are advised             .
A. not to drive in a heavy rain                           B. to do it in an organized way
C. not to get too close to a storm                 D. to spend more time on it in summer
58. By saying “it is all worth it” in the last paragraph, the author means that             .
A. storm chasing costs a lot of money          B. storm chasing is worth hours of waiting
C. efforts in storm chasing are well paid         D. a storm presents the greatest show on Earth
59. What can we learn from the text?
A.  Sometimes storm chasers get nothing but disappointment
B.  Many storm chasers get killed in the storms.
C. Storm chasing is becoming popular around the world.
D. Storm chasing is only fit for young people.

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科目：高中英语 来源：不详 题型：阅读理解

E
Research on the human brain has been attracting more and more scientists in recent years, just like the booming hi-tech industry. One of the latest research topics is how to change the human brain or combine the computer and the human brain, i.e. to transplant a chip into a human brain. This idea may make everyone’s dream come true. If we compare a human brain to a hard disc（硬盘）, what the scientists are doing is to enlarge the capacity of the hard disc. For the time being, there are some difficulties in such transplant experiments, but scientists never give up.
Experiments have started on animals. In 1996, a transplant experiment performed at the Defense and Military Physiology Research Institute in the U.S. turned a bear into a dolphin.
The dolphin was named Ted, and the bear was named Tallin. Using the most advanced technology available, deep and detailed images were made of the memory area in Ted’s brain containing information about swimming by the scientists. They obtained a series of useful information, the signals transferred by the nervous system. Such information was saved into a button-sized chip, which was then transplanted into the action memory area in Tallin’s brain. The information saved on the chip was released by means of electric power.
Recently, another comprehensive memory transplant was performed at the Motor Nerve Research Institute of the University of California. The comprehensive memory transplanted in the experiment included actions, moods, logic, words, images, etc. The experiment involved an entire transplant of the memory area. This was the largest such experiment done so far.
The transplant was performed making a transfer from a dog named “Genius” to a dog named “Idiot”. “Genius” could understand and follow up to 100 gestures and orders made by its master. It was a real genius in memorizing. “Idiot” was the younger brother of “Genius”. It had no contact with people at all since its birth. It became an animal with nothing in its brain, without any memory.
The operation was a complete success. When the two dogs woke up, “Idiot” had grasped all the abilities “Genius” possessed; it was good at memorizing and sensible. It could follow every gesture and any command given by its master. But “Genius” gave no response to its master, and in fact did not recognize him at all.
57. The purpose of the experiment is _____.
A. to combine the computer and the human brain
B. to enlarge the capacity of human brain
C. to make some stupid dog turn clever D. to make bear swim
58. Which of the following statements is TRUE?
A. The scientists transferred a button-sized chip with useful information in Tallin’s brain.
B. The first comprehensive memory transplant was performed at the Motor Nerve Research University.
C. The second experiment wasn’t an entire transplant of the memory area.
D. The Idiot was an animal with memory before brain experiment
59. What does the underlined word “success” refer to?
A. The two dogs woke up.
B. They were both good at memorizing.
C. The Idiot grasped all the abilities of Genius.
D. The Genius grasped all the abilities of Idiot.
60. According to the text, we can infer _____.
A. a person can know more after the experiment
B. a bear can swim after being transferred a chip with related useful information
C. a dog can become clever after entire transplant of the memory area
D. it is really good for animals to have been involved in the transplant experiment

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科目：高中英语 来源：不详 题型：阅读理解

C
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The 968-page final report, not yet released but obtained by The Washington Post, finds no evidence to support people’s concerns that food from clones may have hidden risks.
But, recognizing that a majority of consumers are wary of food from clones—and that cloning could damage the good image of American milk and meat—the report includes hundreds of pages of raw(原始的) data so that others can see how it came to its conclusions.
The report also admits that human health concerns are not the only subject raised by the coming-out of cloned farm animals.
“Moral, religious and ethical concerns have been raised,” the agency notes in a document accompanying the report. But the report is “exactly a science-based evaluation.” It reports, because the agency is not authorized by law to consider those subjects.
In practice, it will be years before foods from clones make their way to store shelves in large quantities, in part because the clones themselves are too valuable to kill for meat or milk. Instead, the expensive animals—replicas(复制品) of some of the finest farm animals ever born—will be used firstly as breeding stock to create what supporters say will be a new generation of superior farm animals.
When food from those animals hits the market, the public may yet have its say. FDA officials have said they do not expect to require food from clones to be labeled as such, but they may allow foods from ordinary animals to be labeled as not from clones.
64.   What can we infer from the first paragraph?
A.    FDA has waited for a long time to get this final report.
B.    Products from cloned animals have been put into the market before.
C.    People are having the products from cloned animals safely.
D.    There have been once opposite opinions against cloned products.
65.   What does the underlined word “wary” mean?
A. Disappointed.           B. Careful.         C. Fond.                                 D. Proud.
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A.    people have little knowledge of the cloned animals
B.    supporters can’t give powerful evidence to support that
C.    the few cloned animals will first be used to create superior animals
D.    they are a new generation for the customers and are too valuable for the customers
67.   What can we conclude from the passage?
A.    FDA officials encourage people to eat more food from clones.
B.    FDA officials think the food from clones will sell better than ordinary food.
C.    People only worry about the health problems when it comes to foods from the clones.
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科目：高中英语 来源：不详 题型：阅读理解

Polly Townsend
PART THREE READING COMPREHENSION
Directions: Read the following three passages. Each passage is followed by several questions or unfinished statements. For each of them there are 4 choices marked A,B,C and D. Choose the one that fits best according to the information given in the passage. (20%)
A
“Mummy, I don’t know what to play with. ” Steve interrupts his mother, who is talking to a friend, for the fourth time. “You’ve got a room full of toys!” his mother says, impatiently, In fact it is the jumble of toys which is to blame for four -year-old Steve's lack of interest in his dolls, cars and stuffed （packed）animals. Each morning he tips out three washing baskets of toys all over his floor, listlessly pulls out something and shortly after is standing at his mother’s desk or following her into the kitchen saying: “Mummy, I am bored.”
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66. Steve interrupted his mother several times because________.
　　A. he felt uninterested in his toys 　 B. he disliked his mother’s guest
　　C. he didn't have enough toys to play with　 D. he hoped his mother would play with him
67. According to the therapist, children often complain that they have nothing, to play with because________.
　　A. they can’t play alone for a long time
　　B. they are too young to play with so many toys
　　C. they are too lazy to pick out their favorites
　　D. the

y lack the ability to value too many things at a time
68. Which of the following can be used in place of the underlined word “jumble ”？
　　A. Simple choice.                   　      B. Mixture in disorder.
　　C. Ordinary appearance.　                   D. Same shape.
69. Which is the advice given to parents in the text?________.
　　A. Buy fewer toys for their children  　
B. Form good habits for their children
　　C. Spare some time to play with their children
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科目：高中英语 来源：不详 题型：阅读理解

B
The fiddler crab (蟹) is a living clock. It indicates the time of day by the colour of its skin, which is dark by day and pale by night. The crab’s changing colour follows a regular twenty-four hour plan that exactly matches the daily rhythm of the sun.
Does the crab actually keep time, or does its skin simply answer to the sun’s rays, changing colour according to the amount of light which strikes it? To find out, biologists kept crabs in a dark room for two months. Even without daylight, the crab’s skin colour continued to change exactly on time.
This characteristic probably developed gradually in answer to the daily rising and setting of the sun, to help protect the crab from sunlight and enemies. After millions of years it has become completely controlled inside the living body of the crab.
The biologists noticed that once each day the colour of the fiddler crab is especially dark, and that each day this happens fifty minutes later than on the day before. From this they discovered that each crab follows not only the rhythm of the sun but also that of the tides (潮水). The crab’s period of greatest darkening is exactly the time of low tide on the beach where it was caught!
40. The crab’s changing colour _______.
A. tells the crab what time it is
B. protects the crab from the sunlight and enemies
C. keeps the crab warm
D. is of no real use
41. When the fiddler crabs were kept in the dark, they _______.
A. did not change colour          B. changed colour more quickly
C. changed colour more slowly     D. changed colour on the same timetable
42. The crab’s colour—changing ability was probably developed _______.
A. in the process of evolution (进化)   B. over millions of years
C. by the work of biologists          D. both A and B

43. The best title for this selection would be _______.
A. The Sun and the Tides B. Discoveries in Biology
C. A scientific Study D. A Living Clock

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科目：高中英语 来源：不详 题型：阅读理解

E
In many societies, there is often greater acceptance of light skin than dark skin．Light skin may be seen as a mark of beauty, intelligence and success．These beliefs can lead to social pressure even within the same racial group．As a result, more and more people with dark skin are using skin-lightening products, even if they may face health risks．
Many people believe that having whiter skin will improve their lives．They think they will have a better chance of getting a job or marrying into a better family．Or they want to look like what their society generally considers beautiful．
Some beauty care products contain chemicals that make skin lighter．This process is also called bleaching （漂白）．But some of the chemicals are extremely dangerous．One chemical has been linked to kidney （肾） damage and some kinds of cancer．It also causes low birth weight in babies when used by mothers-to-be．
At first, bleaching products make the skin color lighter．But after long-term use they can cause problems．The chemicals in the products block and break down the natural process that gives color to skin．The skin loses its natural barrier to protect against sunlight．Then the skin can become thick and discolored．Usually the person will use more of the product in an effort to correct the problem, but this only makes it worse．
Fatimata Ly treats skin problems in the Senegalese capital, Dakar．Doctor Ly says skin bleaching has become a problem throughout Senegal．She says the chemicals are now more dangerous because they are stronger．Some cases have resulted in blackened fingernails, infections and permanent skin damage．
And these are not the only risks．Experts say some people who change their skin color suffer emotional damage．They feel regret and sadness．They feel that instead of risking their health, they should have learned to love and accept their skin color as it was．
72．Why has skin lightening become popular all over the world?
A．There are many ways to help change skin color．
B．Many people with dark skin have no confidence．
C．Light skin seems to bring more advantages than dark skin．
D．People with dark skin are facing the pressure from their family．
73．According to the passage, people using bleaching products would risk _____
A．thinner skin             B．low weight
C．lung cancer       D．emotional damage
74．Which of the following is NOT true about bleaching products?
A．Some of them contain dangerous chemicals．
B．They will not make the skin color lighter．
C．They may cause skin damage．
D．They are likely to bring health risks．
75．The writer's attitude toward using bleaching products is ________．
A．supportive              B．positive
C．uncertain         D．negative

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科目：高中英语 来源：不详 题型：阅读理解

D
Let’s do some sleep math．You lost two hours of sleep every night last week because of a big project due on Friday．On Saturday and Sunday，you slept in，getting four extra hours．On Monday morning，you were feeling so bright—eyed that you only had one cup of coffee，instead of your usual two．But don’t be cheated by your energy．You’re still carrying around a heavy load of sleepiness，or what experts call “sleep debt”一in this case something like six hours，almost a full night’s sleep．
Sleep debt is the difference between the amount of sleep you should be getting and the amount you actually get．It’s a shortage that grows every time we skim some extra minutes off our nightly sleep．“People get more sleep debt gradually without being noticed，”says William C．Dement，founder of the Stanford University Sleep Clinic．Studies show that such short term sleep lack leads to a foggy brain，worsened vision，and trouble remembering．Long-term effects include obesity(肥胖)，insulin(胰岛素)resistance，and heart disease．A survey by the National Sleep Foundation reports that we’re losing one hour of sleep each night——more than two full weeks of sleep every year．
The good news is that，like all debt，with some work，sleep debt can be repaid．Adding all extra hour or two of sleep a night is the way to catch up．For the long-term lack of sleep， take it easy for a few months to get back into a natural sleep pattern．
Go to bed when you are tired，and allow your body to wake you in the morning(no alarm clock allowed)．You may find yourself catatonic(有紧张症的)in the beginning of the recovery cycle：expect to have ten hours shut—eye per night；As the days pass，however，the amount of sleeping time will gradually decrease．
So earn back that lost sleep and follow the rules of your innate(固有的)sleep needs. You’ll feel better．“When you put away sleep debt,you become a superman,”says Stanford's Dement，talking about the improved mental and physical capabilities that come with being well rested．
53．If you have short-term sleep lack，you may___________．
A．put on weight    B．get heart disease  C．hate eating food   D．have a poor sight
54．The example of sleep math is used to show______．
A．in what case you build up a sleep debt
B．in what way you can make up for lack of sleep
C．why you are energetic even without enough sleep
D．why you need six hours’sleep every night
55．By saying the underlined sentence，Dement means that______．
A．you need a lot of sleep to be a superman
B．you will be in a good state with enough sleep
C．you need to be a superman to repay sleep debt
D．you will become a superman with more sleep debt
56．What might be the most suitable title for the passage?
A．How can you keep energetic?    B．What is sleep debt?
C．Can you catch up on lost sleep? D．Can coffee refresh you?

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科目：高中英语 来源：不详 题型：阅读理解

C
LONDON: What could possibly be wrong with planting trees? The benefits are obvious; they firm the soil, soak up (摄取) extra water and take carbon dioxide (二氧化碳) our of the atmosphere.
However, it now turns out that planting trees could add to global warming.
Tree roots do a great job of keeping soil firmly on the ground and out of the wind’s power. The problem is that some of those dust clouds play an important part in soaking up carbon dioxide.
Huge dust storms blow out over the oceans from dry parts of North Africa and central Asia. Tons of dust are lifted and left as a thin film over the ocean surface. The dust fuels oceanic life.
Dust from China is carried east and left in the Pacific Ocean. If a tree-planting programme there is successful and the dust supply reduced, the net result may be that less carbon dioxide gets locked away in the ocean.
Andy Ridgwell, an environmental scientist from the University of East Anglia, has spent the past few years studying dust and says his work “shows clearly that the complexity of the system and the importance of not tinkering(粗劣地修补) with it without understanding the results. For this reason the need is to focus(集中) on cutting carbon dioxide giving off rather than monkeying (瞎弄) about with the land surface.”
An American scientist, Robert Jackson, has shown that when native grassland areas are invaded(侵入) by trees, carbon is lost from the soil. “We are studying why the soil carbon disappears, but one theory is that trees do a lot more of their growing above ground compared to grasses, so less carbon goes directly into the soil from trees, ” says Jackson.
In wet areas of the world, the gain from trees absorbing carbon dioxide above ground seems to be outweighed(超过) by the loss of carbon from the soil below ground. Countries that plan to combat global warming by planting trees may have to think again.
Solutions to environmental problems are often more complex than they first appear, and understanding the Earth’s climate is a very great challenge.
63．People usually hold the opinion that       .
A．huge dust storms can destroy carbon dioxide
B．huge dust storms can destroy the oceans on the earth
C．huge dust storms can’t do anything beneficial for man
D．planting trees is the only way to control huge dust storms
64．Andy Ridgwell, the environmental scientist, believes that       .
A．dust plays a more important part than trees
B．trees should’t have been planted in dry places
C．carbon dioxide is harmful to everything on the earth
D．environmental problems are more complex than expected
65．Robert Jackson’s experiment proves that         .
A．grassland areas should be covered by forests
B．trees hold more carbon than grasses
C．carbon can turn grass into dust
D．less carbon can make trees grow faster
66．The underlined word “combat” in the last paragraph means      .
A．learn about      B．fight against     C．live with   D．give up

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