题目内容

8.A 33-year-old physicist in California recently quit his job to devote himself to an unpaid job teaching math on the Internet,and his lessons are reaching almost 100,000 people a month.Salman Khan's voice is heard every day on the net-by tens of thousands of students around the world who are hungry for help learning math.He has posted 1,200lessons an YouTube-lessons that appear on an electronic(电子的)blackboard,which range from(涵括)basic addition to advanced mathematics for science and finance.And they are free.
Khan lives in Silicon Valley,with his wife,a doctor,and their new baby.He got the idea for his"Khan Academy"12 years ago,when he taught a young cousin how to convert(转换)kilograms to grams.With Khan's help,the cousin got good at math,and Khan began a new career.
Now,Khan records his lessons himself,but he never goes on camera."It feels like my voice in their head.You're looking at it and it feels like someone's over your shoulder talking in your ear,as opposed to(与…相反)someone at the blackboard,which is distant from you,"he said.
When Springfield High School in Palo Alto,California invited Khan to speak in person-he immediately connected to the students there.
The idea of short lessons that can be played over and over again attracted high school senior Bridget Meaney.She says she had trouble with math in the seventh grade."I think the teachers are good,but they can't teach at a speed that's perfect for everyone,"she said."I like the idea of learning something in class but then going back and pressing pause or rewind and actually getting a deeper understanding of it."
Originally,Khan kept his lessons short because of YouTube restrictions(限制).Now,he thinks short is better."Education researchers now tell me that 10minutes is how long someone can have a high level of attention.And anything beyond that and your brain switches off,"he said.
For Khan,teaching math,science,and finance is just the beginning.He says he's ready to expand(拓展)his YouTube site to include other subjects as well.

54.What gave Khan the idea of teaching math online?B
A.His interest in Internet teaching.
B.His success in helping his cousin learn math.
C.A suggestion made to him at a local high school.
D.His discovery that many students found learning math difficult.
55.Why does Khan never go on camera?A
A.He wants to create a more relaxed learning atmosphere.
B.He wants to keep distance from the viewers.
C.It's restricted by YouTube for education videos.
D.He's to a shy to show his face on camera.
56.From the passage,we know thatC.
A.Khan travels to many schools to promote his lessons
B.Khan gives live math lessons every day for free
C.Khan plans to include more subjects in the future
D.Khan set up the Khan Academy with his wife
57.What does Khan mean by"short is better"in the 6th paragraph?B
A.Short lessons encourage students to return to the website.
B.Keeping the lessons short can ensure better attention.
C.Students enjoy short mathematics lessons more.
D.YouTube suggests short lessons for its site.

分析 文章主要讲述了Khan通过自己录课想创造一种更轻松的学习氛围以及Khan计划提供更多科目的教学录像.

解答 54.B 细节理解.由"He got the idea for his'Khan Academy'four years ago,when he taught a young cousin how to convert(转换)kilograms to grams.With Khan's help,the cousin got good at math,and Khan began a new career."可知,Khan因为成功地使他的侄子学好了数学而开始了在网上教授数学的想法.
55.A 推理判断.从他所说的话"It feels like my voice in their head.which is distant from you"可知,他自己录课是想创造一种更轻松的学习氛围.
56.C 推理判断.由最后He says he's ready to expand his YouTube site to include other subjects as well.可推断.Khan计划提供更多科目的教学录像.
57.B.句子理解,从其后面的内容"Education researchers now tell me that 10 minutes is how long someone can have a high level of concentration.And anything beyond that and your brain switches off,"he said可知,"10分钟是人的注意力可以最集中的一段时间."

点评 做这类题材阅读理解时要求考生对文章通读一遍,做题时结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案.推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案,切忌胡乱猜测,一定要做到有理有据.

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18.In modern society there is a great deal of argument about competition.Some value it highly,believing that it is responsible for social progress and prosperity (繁荣).Others say that competition is bad; that it sets one person against another; that it leads to unfriendly relationship between people.
I have taught many children who held the belief that their self-worth relied on how well they performed at tennis and other skills.For them,playing well and winning are often life-and-death affairs.In their single-minded pursuit(追求)of success,the development of many other human qualities is sadly forgotten.
However,while some seem to be lost in the desire to succeed,others take an opposite attitude.In a culture In modern society there is a great deal of argument which only values the winner and pays no attention to the ordinary players,they strongly blame competition.Among themost vocal are youngsters who have suffer under competitive pressures from their parents or society.Teaching these young people,I often observe in them a desire to fail.They seem to seek failure by not trying to win or achieve success.By not trying,they always have an excuse:"I may have lost,but it doesn't matter because I really didn't try."What is not usually admitted by them is the belief that if they had really tried and lost,that would mean a lot.Such a loss would be a measure of their worth.Clearly,this belief is the same as that of true competitors who try to prove themselves.Both are based on the mistaken belief that one's self-respect relies on how well one performs in comparison with others.Both are afraid of not being valued.Only when this basic and often troublesome fear begins to disappear(缓解) can we discover a new meaning in competition.

32.What does this passage mainly talk about?B
A.Competition helps to set up self-respect.
B.Opinion about competition are different among people.
C.Competition is harmful to personal quality development.
D.Failures are necessary experiences in competition.
33.The underlined phrase"the most vocal"in Paragraph 3 meansC.
A.those who try their best to win.
B.those who value competition most highly.
C.those who are against competition most strongly.
D.those who rely on others most for success.
34.What is the similar belief of the true competition and those with a"desire to fail"?A
A.One's worth lies in his performance compared with others.
B.One's success in competition needs great efforts.
C.One's achievement is determined by his particular skills.
D.One's success is based on how hard he has tried.
35.Which point of the view may the author agree to?D
A.Every effort should be paid back.
B.Competition should be encouraged.
C.Winning should be a life-and-death matter.
D.Fear of failure should be removed in competition.
19.On the first day of his presidency,Donald Trump (特朗普) began making changes to the policies of earlier presidents.
A document released by the new Trump White House said the president would soon withdraw from the 12-nation Trans-Pacific Partnership trade agreement(12国跨太平洋伙伴貿易协定).The free trade deal was negotiated by the Obama administration.
The While House website said Trump would also work to renegotiate the North American Free Trade Agreement known as NAFTA.
"If our partners refuse a renegotiation that gives American workers a fair deal,then the President will give notice of the United States'intent to withdraw from NAFTA,"a White House statement said.
Neither action was a surprise.During the presidential campaign,Trump said bad trade deals had hurt employment in America.
The NAFTA agreement removed most tariffs(关税) on products traded between the US,Canada and Mexico.It was signed by President Bill Clinton in 1993.
The Trump administration also said it is ready to cancel what it called,"harmful and unnecessary policies."Among them is the Obama administration's plan to reduce pollutants from coal-powered electricity plants.The climate plan was designed to cut gases that cause global warming.
Another is a clean water rule to protect small waterways and wetlands from development by the Environmental Protection Agency.
Trump has said he wants to cancel and replace a third policy,the national health care law,known as"Obamacare."
The Trump administration has promised other major changes.In education,for example,there are plans to give parents more choices in selecting schools for their children,including private,religious schools.

28.Who would have the U.S.withdraw from the free trade deal negotiated by the Obama administration?
D
A.The Obama administration.
B.The new Trump White House.
C.The Trump administration.
D.Donald Trump.
29.In which case will Donald Trump get the US continue to observe NAFTA?A
A.Canada and Mexico agree to offer American workers a fair deal.
B.Canada and Mexico agree to renegotiate NAFTA.
C.Canada and Mexico agree to offer workers a fair deal.
D.The partners refuse a renegotiation that offers American workers a fair deal.
30.How many policies considered harmful and unnecessary by the Trump administration are mentioned in the passage?C
A.One.
B.Two.
C.Three.
D.Four.
31.What kind of articles does this passage belong to?B
A.Advertisement.
B.News.
C.Introductions.
D.Announcement.
16.A bite from a tsetse fly is an extremely unpleasant experience.To make matters worse,several species of tsetse fly can transmit diseases.One of the most dangerous is a parasite(寄生虫)that causes"sleeping sickness".
After the initial bite,sleeping sickness symptoms often start with a fever,headaches and aching muscles.As the illness goes on,those infected become increasingly tired,which is where it gets its name.
It is worth noting that sleeping sickness is no longer as deadly as it once was.In the early 20th Century several hundred thousand people were infected each year.By the 1960s the disease was considered"under control"and had reached very low numbers,making its spread more difficult.But in the 1970s there was another major infection,which took 20 years to control.Since then,better screening programs and earlier treatments have reduced the number of cases dramatically.In 20 is this figure dropped to fewer than 3,000.The World Health Organization (WHO) hopes the disease will be completely removed by 2020.More problematically,a series of new studies have shown that the parasite is more complicated than previously believed.
Sleeping sickness has always been considered-and analyzed-as a blood disease,because the parasites can readily be discovered in the blood of its victims.However,in a recent study found that the parasite can stay in the skin and fat,as well as in the blood.There may even be a higher density(密度)of the parasite in the skin than in the blood.That means a person can have no symptoms but still both harbor the disease and spread it.The finding could explain the mysterious 1970s infection,and why the disease can spring up in areas that had previously been cleared.

28.What's the danger of a tsetse fly bite?B
A.It makes people sleepy.
B.It causes skin disease.
C.It brings about deaths.
D.It transmits deadly parasites.
29.What can we infer about sleeping sickness from Paragraph 3?D
A.It's still a threat to human health.
B.It's not that dangerous at present.
C.It's incurable in the early 20th century.
D.It's completely under control in the 1960s.
30.What does the underlined"harbor"most probably mean?A
A.carry
B.resist
C.exchange
D.hide
31.What does the latest research indicate according to the passage?D
A.Sleeping sickness is a blood disease.
B.Skin is more suitable for the parasite to grow.
C.Sleeping sickness can be spread with no signs.
D.Parasites in the skin caused the 1970s infection.
20.Once,when I was a teenager,my father and I were standing in line to buy tickets for the circus (马戏).Finally,there was only one family between us and the ticket counter.
   This family made a big impression on me.There were eight children,all probably under the age of twelve.You could tell they didn't have a lot of money.
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   He was smiling and responding in pride,looking back at her as if to say,"You got that right."The ticket lady asked the father how many tickets he wanted.He proudly responded,"Please let me buy eight children's tickets and two adult tickets so I can take my family to the circus."
   The ticket lady gave the price.The man's wife let go of his hand,her head dropped,and his lips began to shake.The father leaned a little closer and asked,"How much did you say?"
   The ticket lady again quoted the price.The man didn't have enough money.
   How was he supposed to turn and tell his eight children that he didn't have enough money to take them to the circus?
   Actually we were not wealthy in any sense.So I understand how the kids would feel.I felt sorry for them.
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Paragraph 1
Seeing what was going on,my dad put his hand in his pocket,pulled out a $20 bill and dropped it on the ground.Then he picked it op and tapped the man on the shoulder and said,"Excuse me,sir,this fell out of your pocket.'The man turned around and saw the money.He knew what was going on,he looked straight into my dad's eyes,took my dad's hand in both of his,squeezed tightly onto the $20 bill,and with his lip shakingand a tear running down his cheek,he replied,"Thank you,thank you,sir.This really means a lot to me and my family."
Paragraph 2
That day my father and I went back to our car and drove home without any tickets.We didn't go to the circus that night,when I asked dad why he did so,Dad said,"My child,it was a desperate,heartbreaking and embarrassing situation for a father.Surely he wasn't begging for a handout,but he reminded me of my father,when I was young."He paused for a while,as if wandering in his memory."We should appreciate what we have obtained from life and seize every opportunity to help others.We didn't go to the circus tonight,but we didn't go without.".
17.Are you truly happy?Do you ever know what it means to be happy and what it takes to achieve happiness?(36)D The following are a few tips that I follow to create happiness in my life.
※Make a plan for achieving goals that you believe will make you happy.Your moods will very likely increase if you are going after something you value.
※Surround yourself with happy people.It is easy to begin to think negatively when you are surrounded by people who think that way. (37)B
※When something goes wrong,try to figure out a solution instead of being absorbed in self-pity.Truly happy people don't allow setbacks to affect their mood because they know that with a little thought they can turn the circumstances back to their favor.
※(38)E These few minutes will give you the opportunity to focus on the positive things in your life and will lead you to continuous happiness.
※(39)G Whether you treat yourself to lunch,take a long,relaxing bath or simply spend a few extra minutes on your appearance,you will be subconsciously (下意识地) putting yourself in a better mood.
※Finding the humor in situations can also lead to happiness.Find a way to make light of a situation that would otherwise make you happy.
※Keeping healthy is another way to achieve happiness. (40)C

A.What makes one person happy may be very different from what makes someone else happy.
B.On the contrary,if you are around people who are happy,their emotional state will be infectious.
C.Being overweight or not eating nutritious foods can have a negative effect on your mood.
D.These are important questions for anyone who is seeking happiness to ask themselves.
E.Spend a few minutes each day thinking about the things that make you happy.
F.There are some tips in life that lead to happiness.
G.It's also important to take some time each day to do something nice for yourself.
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According to this study,published in the PNAS,10 volunteers were initially exposed to clean air and given a placebo (安慰剂)to check their baseline responses.The group then kept on taking placebos tor tour weeks before being exposed to heavily polluted air from downtown Toronto,where an estimated 1,000cars passed every hour.The bad air was delivered to the volunteers through an"oxygen type"face mask.The experiment was then repeated,with each volunteer taking a Vitamin B supplement daily,made up of 2.5mg of folic acid,50mg of Vitamin B6,and l mg of Vitamin B12.
Vitamin B6can be found in liver,chicken,nuts and other things,and Vitamin B12 in fish,meat,eggs,milk and some cereals.The researchers found that four weeks of Vitamin B supplements-the damage of PM2.5effects by 28-76%.The results emphasized how prevention at an individual level could be used to fight against the damage of PM2.5,the researchers said.

29.What's the newly discovered effect of Vitamin B in Paragraph 1?C
A.It can be used to replace other vitamins in our daily life.
B.It can help lower the air pollution level in the open air.
C.It can reduce the impact of PM2.5on human bodies.
D.It can get rid of the pollutants remaining in our body.
30.What can be learned from the second paragraph?A
A.Further study about the effect of Vitamin B needs to be done.
B.Vitamin B is the most important to human's health.
C.The tiny particles in the air are made up of PM2.5.
D.92% of the world's people are affected by PM2.5.
31.How did researchers draw the new conclusion about Vitamin B?B
A.By referring to a journal.
B.By performing experiments.
C.By interviewing scientists.
D.By comparing vitamins.
32.You may read the passage on a website aboutD.
A.environment
B.medicine
C.education
D.health.

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