The past ages of man have all been carefully labeled by anthropologists (人类学家). Descriptions like "Palaeolithic (旧石器时代的) Man". "Neolithic (新石器时代的) Man",etc. neatly sum up whole periods. When the time comes for anthropologists to turn their attention to the twentieth century, they will surely choose the label "Legless Man". Histories of the time will go something like this:"in the twentieth century, people forgot how to use their legs. Men and women moved about in cars, buses and trains from a very early age. There were lifts in all large buildings to prevent people from walking. And the surprising thing is that they didn't use their legs even when they went on holiday."
The future history books might also record that we were deprived (剥夺) of the use of our eyes. In our hurry to get from one place to another, we failed to see anything on the way. Air travel gives you a bird's-eye view of the world. When you travel by car or train, an unclear picture of the countryside constantly smears the windows. Car drivers, especially, are mixed with the urge to go on and on: they never want to stop. The typical twentieth-century traveler is the man who always says "I've been there." You mention the remotest, and someone is bound to say "I've been there"-meaning, "I drove through it at100 miles an hour on the way to somewhere else."
When you travel at high speeds, the present means nothing: you live mainly in the future because you spend most of your time looking forward to arriving at some other place. But actual arrival, when it is achieved, is meaningless. You want to move on again. By traveling like this, you suspend all experience. The traveler on foot, on the other hand, lives constantly in the present. For him traveling and arriving are one and the same thing: he arrives somewhere with every step he makes. He experiences the present moment with his eyes, his ears and the whole of his body. At the end of his journey he feels a delicious physical tiredness. He knows that sound, satisfying sleep will be his: the just reward of all true travelers.
1.Anthropologists label man nowadays "Legless Man" because _____.
A. people prefer cars, buses and trains
B. people use their legs less and less
C. lifts prevent people from walking
D. people travel without using legs
2.According to the passage, what might make people lose the right of using their eyes?
A. the modern means of transportation.
B. A bird’s-eye view of the world.
C. The unclear sight from the vehicles.
D. The fast-paced life style.
3.From the passage, we know traveling at high speeds means _______.
A. appreciating beautiful scenery B. experiencing life skills
C. focusing on the next destination D. feeling physical tiredness
4.What does the author intend to tell us?
A. Modern transportation devices have replaced legs.
B. Traveling makes the world a small place.
C. Human’s history develops very fast.
D. The best way to travel is on foot.
高三英语阅读理解中等难度题
The past ages of man have all been carefully labeled by anthropologists. Descriptions like ‘ Palaeolithic Man’, ‘Neolithic Man’, etc., neatly sum up whole periods. When the time comes for anthropologists to turn their attention to the twentieth century, they will surely choose the label ‘Legless Man’. Histories of the time will go something like this: ‘in the twentieth century, people forgot how to use their legs. Men and women moved about in cars, buses and trains from a very early age. There were lifts and escalators in all large buildings to prevent people from walking. This situation was forced upon earth dwellers of that time because of miles each day. But the surprising thing is that they didn’t use their legs even when they went on holiday. They built cable railways, ski-lifts and roads to the top of every huge mountain. All the beauty spots on earth were marred by the presence of large car parks. ’
The future history books might also record that we were deprived of the use of our eyes. In our hurry to get from one place to another, we failed to see anything on the way. Air travel gives you a bird’s-eye view of the world – or even less if the wing ofthe aircraft happens to get in your way. When you travel by car or train a blurred image of the countryside constantly smears the windows. Car drivers, in particular, are forever obsessed with the urge to go on and on: they never want to stop. Is it the lure of the great motorways, or what? And as for sea travel, it hardly deserves mention. It is perfectly summed up in the words of the old song: ‘I joined the navy to see the world, and what did I see? I saw the sea.’ The typical twentieth-century traveler is the man who always says ‘I’ve been there. ’ You mention the remotest, most evocative place-names in the world like El Dorado, Kabul, Irkutsk and someone is bound to say ‘I’ve been there’ – meaning, ‘I drove through it at 100 miles an hour on the way to somewhere else. ’
When you travel at high speeds, the present means nothing: you live mainly in the future because you spend most of your time looking forward to arriving at some other place. But actual arrival, when it is achieved, is meaningless. You want to move on again. By traveling like this, you suspend all experience; the present ceases to be a reality: you might just as well be dead. The traveler on foot, on the other hand, lives constantly in the present. For him traveling and arriving are one and the same thing: he arrives somewhere with every step he makes. He experiences the present moment with his eyes, his ears and the whole of his body. At the end of his journey he feels a delicious physical weariness. He knows that sound. Satisfying sleep will be his: the just reward of all true travellers.
1.Anthorpologists label nowaday’s men ‘Legless’ because
A people forget how to use his legs.
B people prefer cars, buses and trains.
C lifts and escalators prevent people from walking.
D there are a lot of transportation devices.
2.Travelling at high speed means
A people’s focus on the future.
B a pleasure.
C satisfying drivers’ great thrill.
D a necessity of life.
3.Why does the author say ‘we are deprived of the use of our eyes’ ?
A People won’t use their eyes.
B In traveling at high speed, eyes become useless.
C People can’t see anything on his way of travel.
D People want to sleep during travelling.
4.What is the purpose of the author in writing this passage?
A Legs become weaker.
B Modern means of transportation make the world a small place.
C There is no need to use eyes.
D The best way to travel is on foot.
5.What does ‘a bird’s-eye view’ mean?
A See view with bird’s eyes.
B A bird looks at a beautiful view.
C It is a general view from a high position looking down.
D A scenic place.
VOCABULARY
Palaeolithic 旧石器时代的
Neolithic 新石器时代的
escalator 自动电梯，自动扶梯
ski-lift 载送滑雪者上坡的装置
mar 损坏，毁坏
blur 模糊不清，朦胧
smear 涂，弄脏，弄模糊（尤指画面、轮廓等）
evocative 引起回忆的，唤起感情的
El Dorado (由当时西班牙征服者想象中的南美洲)黄金国，宝山，富庶之乡
Kabul 喀布尔（阿富汗首都）
Irkutsk 伊尔库茨克（原苏联亚洲城市）
难句译注与答案详解
The only way to travel is on foot 旅游的唯一方法是走路
难句译注
Air travel gives you a bird’s-eye view of the world – or even if the wing of the aircraft happens to get in your way.
【参考译文】飞机旅行，你只可俯视世界――如果机翼碰巧挡住了你的视线，就看得更少了。
When you travel by car or train a blurred image of the country-side constantly smears the windows.
【参考译文】如果乘车或火车旅行，郊外模糊朦胧的景象不断地掠过窗口。
写作方法与文章大意
文章以因果写作方法，写出了由于种种现代化交通设施、人们不需用脚走路，甚至也不需要用眼看景，出门就坐汽车、公交车、地铁、飞机……，车、机速度飞快，外边的景物难以看清，最终导致人们忘记用脚、用眼成为“无脚之人”。一切都经历不到。作者建议最佳的旅游方法是徒步――经历现实。
高三英语阅读理解中等难度题查看答案及解析
The past ages of man have all been carefully labeled by anthropologists (人类学家). Descriptions like "Palaeolithic (旧石器时代的) Man". "Neolithic (新石器时代的) Man",etc. neatly sum up whole periods. When the time comes for anthropologists to turn their attention to the twentieth century, they will surely choose the label "Legless Man". Histories of the time will go something like this:"in the twentieth century, people forgot how to use their legs. Men and women moved about in cars, buses and trains from a very early age. There were lifts in all large buildings to prevent people from walking. And the surprising thing is that they didn't use their legs even when they went on holiday."
The future history books might also record that we were deprived (剥夺) of the use of our eyes. In our hurry to get from one place to another, we failed to see anything on the way. Air travel gives you a bird's-eye view of the world. When you travel by car or train, an unclear picture of the countryside constantly smears the windows. Car drivers, especially, are mixed with the urge to go on and on: they never want to stop. The typical twentieth-century traveler is the man who always says "I've been there." You mention the remotest, and someone is bound to say "I've been there"-meaning, "I drove through it at100 miles an hour on the way to somewhere else."
When you travel at high speeds, the present means nothing: you live mainly in the future because you spend most of your time looking forward to arriving at some other place. But actual arrival, when it is achieved, is meaningless. You want to move on again. By traveling like this, you suspend all experience. The traveler on foot, on the other hand, lives constantly in the present. For him traveling and arriving are one and the same thing: he arrives somewhere with every step he makes. He experiences the present moment with his eyes, his ears and the whole of his body. At the end of his journey he feels a delicious physical tiredness. He knows that sound, satisfying sleep will be his: the just reward of all true travelers.
1.Anthropologists label man nowadays "Legless Man" because _____.
A. people prefer cars, buses and trains
B. people use their legs less and less
C. lifts prevent people from walking
D. people travel without using legs
2.According to the passage, what might make people lose the right of using their eyes?
A. the modern means of transportation.
B. A bird’s-eye view of the world.
C. The unclear sight from the vehicles.
D. The fast-paced life style.
3.From the passage, we know traveling at high speeds means _______.
A. appreciating beautiful scenery B. experiencing life skills
C. focusing on the next destination D. feeling physical tiredness
4.What does the author intend to tell us?
A. Modern transportation devices have replaced legs.
B. Traveling makes the world a small place.
C. Human’s history develops very fast.
D. The best way to travel is on foot.
高三英语阅读理解中等难度题查看答案及解析
The past ages of man have all been carefully labeled by anthropologists (人类学家). Descriptions like "Palaeolithic（旧石器时代的）Man" ."Neolithic（新石器时代的）Man" ,etc. .neatly sum up whole periods. When the time comes for anthropologists to turn their attention to the twentieth century, they will surely choose the label" Legless Man". Histories of the time will go something like this: "in the twentieth century, people forgot how to use their legs. Men and women moved about in cars, buses and trains from a very early age. There were lifts in all large buildings to prevent people from walking. And the surprising thing is that they didn't use their legs even when they went on holiday. "
The future history books might also record that we were deprived (剥夺) of the use of our eyes. In our hurry to get from one place to another, we failed to see anything on the way. Air travel gives you a bird's-eye view of the world. When you travel by car or train, an unclear picture of the countryside constantly smears the windows. Car drivers, especially, are mixed with the urge to go on and on: they never want to stop. The typical twentieth-century traveler is the man who always says" I've been there. "You mention the remotest, and someone is bound to say "I've been there"—meaning, "I drove through it at 100 miles an hour on the way to somewhere else. "
When you travel at high speeds, the present means nothing: you live mainly in the future because you spend most of your time looking forward to arriving at some other place. But actual arrival, when it is achieved, is meaningless. You want to move on again. By traveling like this, you suspend all experience. The traveler on foot, on the other hand, lives constantly in the present.
For him traveling and arriving are one and the same thing: he arrives somewhere with every step he makes. He experiences the present moment with his eyes, his ears and the whole of his body. At the end of his journey he feels a delicious physical tiredness. He knows that sound, satisfying sleep will be his: the just reward of all true travelers.
1.What's the best title of the passage?
A. The advantages of travel B. The best way to travel
C. The reward of true travel D. Possible ways to travel
2.Anthropologists label man nowadays "Legless" because______.
A. people forget how to use their legs
B. lifts prevent people from walking
C. modern vehicles have replaced walking
D. people prefer cars, buses and trains
3.While traveling at high speed,______.
A. people can get more pleasure from it
B. people always focus on next destination
C. people can enjoy the view of the destination
D. people care much about the arrangement of the journey
4.The author says "we are deprived of the use of our eyes "because ______.
A. people can't get a clear picture of the view along
B. eyes become useless in traveling at high speed
C. people want to sleep during traveling
D. people won't use their eyes
5.What does the author intend to tell us?
A. Legs become weaker.
B. There is no need to use legs or eyes.
C. Modern means of transportation make the world a small place.
D. We should experience the present heart and soul while traveling.
高三英语阅读理解中等难度题查看答案及解析
There are labels（标签） inside all new clothes．The labels tell you how to take care of your clothes．The label for a shirt may tell you to wash it in warm water．A sweater label may tell you to wash in cold water．The label on a coat may say “dry clean only”, for washing may ruin this coat．If you do as the directions on the label, you can keep your clothes looking their best for a long time．
Many clothes today must be dry cleaned．Dry cleaning is expensive．When buying new clothes, check to see if they will need to be dry cleaned．You will save money if you buy clothes that can be washed．
You can save money if you buy clothes that are well made．Well-made clothes last longer．They look good even after they have been washed many times．Clothes that cost more money are not necessarily better made．They do not always fit better．Sometimes less expensive clothes look and fit better than more expensive clothes．
1.If you want to save money, you had better buy clothes that ______．
A．don’t fit you B．don’t last long
C．need to be dry cleaned D．can be washed
2.The labels inside the clothes tell you______．
A．how to keep them looking their best B．how to save money
C．whether they fit you or not D．where to get them dry cleaned
3.We learn from the passage that cheaper clothes ______．
A．are always worse made B．must be dry cleaned
C．can not be washed D．can sometimes fit you better
4.The best title for the passage should be ______．
A．Buy Less Expensive Clothes B．Taking Enough Money When Shopping
C．Being a Clever Clothes Shopper D．Choosing the Labels inside New Clothes
高三英语阅读理解中等难度题查看答案及解析
Over the past century, all kinds of unfairness and discrimination(歧视) have been made illegal. But one popular form continues to exist, that is alphabetism (字母排序法). This, for those as yet unaware of such a disadvantage, refers to discrimination against those whose surnames (姓氏) begin with a letter in the lower half of the alphabet.
It has long been known that the cars of a taxi firm called AAAA have a big advantage over Zodiac cars when customers look through their phone directories. Less well known is the advantage that Adam Abbot has in life over Zoe Zysman. English names are fairly spread between the halves of the alphabet. Yet a quite large number of top people have surnames beginning with letters between A and K.
Thus the American presidents and vice-presidents have surnames starting with B and C separately and 26 of those before George Bush took office (including his father) had surnames in the first half of the alphabet against just 16 in the second half. Even more striking, six of the seven heads of government of the G7 rich countries are alphabetically advantaged (Berlusconi, Blair, Bush, Chirac, Chretien and Koizumi ). The world’s three top central bankers (Greenspan, Duisenberg and Hayami) are all close to the top of the alphabet, even if one of them really uses Japanese characters. The same case are the world’s five richest men (Gates, Buffet and so on).
Can this merely happen by chance? At the start of the first year in primary school, teachers seat pupils alphabetically from the front, to make it easier to remember their names. So shortsighted Zysman gets stuck in the back row, and is seldom asked the improving questions by those teachers. At that time the alphabetically disadvantaged may think they have had a lucky escape. Yet the result may be worse qualifications, because they get less attention, as well as less confidence in speaking publicly.
The unfairness continues. At university graduation parties, the ABCs proudly get their awards first. However, by the time they reach the Zysmans most people are a little tired. Lists of job interviews and conference speakers and attendees all tend to be drawn up alphabetically, and their readers lose interest as they plough through them.
1. What does the author intend to show with AAAA cars and Zodiac cars?
A. An example of competition of two kinds of cars. B. Some advantages of AAAA cars in the taxi firm.
C. An example of unfairness caused by alphabetism. D. Some disadvantages of Zodiac cars in the taxi firm.
2. What can we infer from the first three paragraphs?
A. The alphabet is to blame for the failure of Zoe Zysman.
B. In both East and West, names are important to success.
C. Customers often pay a lot of attention to companies’ names.
D. The discrimination in alphabetism can be found in many areas.
3. The fourth paragraph suggests that .
A. alphabetically disadvantaged students often escape from class
B. teachers should pay equal attention to all their students
C. questions are often put to the more intelligent students
D. students should be seated according to their eyesight
4. Which of the following is true according to the passage?
A. VIPs in the western world gain a great deal from alphabetism.
B. People with surnames beginning with N to Z are often ill – treated.
C. Putting things alphabetically may lead to unintentional unfairness.
D. The movement to get rid of alphabetism still has a long way to go.
高三英语阅读理解简单题查看答案及解析
Over the past century, all kinds of unfairness and discrimination(歧视) have been made illegal. But one popular form continues to exist, that is alphabetism (字母排序法). This, for those as yet unaware of such a disadvantage, refers to discrimination against those whose surnames (姓氏) begin with a letter in the lower half of the alphabet.
It has long been known that the cars of a taxi firm called AAAA have a big advantage over Zodiac cars when customers look through their phone directories. Less well known is the advantage that Adam Abbot has in life over Zoe Zysman. English names are fairly spread between the halves of the alphabet. Yet a quite large number of top people have surnames beginning with letters between A and K.
Thus the American presidents and vice-presidents have surnames starting with B and C separately and 26 of those before George Bush took office (including his father) had surnames in the first half of the alphabet against just 16 in the second half. Even more striking, six of the seven heads of government of the G7 rich countries are alphabetically advantaged (Berlusconi, Blair, Bush, Chirac, Chretien and Koizumi ). The world’s three top central bankers (Greenspan, Duisenberg and Hayami) are all close to the top of the alphabet, even if one of them really uses Japanese characters. The same case are the world’s five richest men (Gates, Buffet and so on).
Can this merely happen by chance? At the start of the first year in primary school, teachers seat pupils alphabetically from the front, to make it easier to remember their names. So shortsighted Zysman gets stuck in the back row, and is seldom asked the improving questions by those teachers. At that time the alphabetically disadvantaged may think they have had a lucky escape. Yet the result may be worse qualifications, because they get less attention, as well as less confidence in speaking publicly.
The unfairness continues. At university graduation parties, the ABCs proudly get their awards first. However, by the time they reach the Zysmans most people are a little tired. Lists of job interviews and conference speakers and attendees all tend to be drawn up alphabetically, and their readers lose interest as they plough through them.
1.What does the author intend to show with AAAA cars and Zodiac cars?
A. An example of competition of two kinds of cars. B. Some advantages of AAAA cars in the taxi firm.
C. An example of unfairness caused by alphabetism. D. Some disadvantages of Zodiac cars in the taxi firm.
2.What can we infer from the first three paragraphs?
A. The alphabet is to blame for the failure of Zoe Zysman.
B. In both East and West, names are important to success.
C. Customers often pay a lot of attention to companies’ names.
D. The discrimination in alphabetism can be found in many areas.
3.The fourth paragraph suggests that .
A. alphabetically disadvantaged students often escape from class
B. teachers should pay equal attention to all their students
C. questions are often put to the more intelligent students
D. students should be seated according to their eyesight
4.Which of the following is true according to the passage?
A. VIPs in the western world gain a great deal from alphabetism.
B. People with surnames beginning with N to Z are often ill – treated.
C. Putting things alphabetically may lead to unintentional unfairness.
D. The movement to get rid of alphabetism still has a long way to go.
高三英语阅读理解中等难度题查看答案及解析
Soccer is played by millions of people all over the world, but there have only been few players who were truly great. How did these players get that way—was it through training and practice, or are great players “born, not made”? First, these players came from places that have had famous stars in the past—players that a young boy can look up to and try to imitate. In the history of soccer, only six countries have ever won the World Cup—three from South America and three from western Europe. There has never been a great national team—or a really great player—from North America or from Asia. Second, these players have all had years of practice in the game. Alfredo Di Stefano was the son of a soccer player, as was Pele. Most players begin playing the game at the age of three or four.
Finally, many great players come from the same kind of neighborhood—a poor, crowded area where a boy’s dream is not to be a doctor, lawyer, or businessman, but to become a rich, famous athlete or entertainer. For example, Liverpool, which produced the Beetles, had one of the best English soccer teams in recent years. Pele practiced in street with a “ball” made of rags. And George Best learned the tricks that made him famous by bouncing the ball off a wall in the slums of Belfast.
All great players have a lot in common, but that doesn’t explain why they are great. Hundreds of boys played in those Brazilian streets, but only one became Pele. The greatest players are born with some unique that sets them apart from all the others.
1.According to the author, which of the following statements is true?
A. Great soccer players are born, not made.
B. Truly great players are rare.
C. Only six countries have ever had famous soccer stars.
D. Soccer is the least popular sport in North America and Asia.
2.The word “tricks” at the end of paragraph 2 is closest in meaning to ____.
A. experience B. cheating
C. skills D. training
3.In the last paragraph the statement “only one became Pele” indicates that___.
A. Pele is the greatest soccer player
B. the greatest players are born with some unique quality
C. Pele’s birthplace sets him apart from all the other players
D. the greatest players practice with “balls” made of rags
4.The author thinks a soccer player’s success belongs to all the following factors EXCEPT______.
A. his family background B. his neighborhood
C. his practice D. his height
高三英语阅读理解中等难度题查看答案及解析
Soccer is played by millions of people all over the world, but there have only been few players who were truly great. How did these players get that way---was it through training and practice, or are great players “born, not made”? First, these players came from places that have had famous stars in the past---players that a young boy can look up to and try to imitate. In the history of soccer, only seven countries have ever won the World Cup---three from South America and four from Western Europe. There has never been a great national team---or a really great player---from North America or from Asia. Second, these players have all had years of practice in the game. Alfredo Di Stefano was the son of a soccer player, as was Pele. Most players begin playing the game at the age of three or four.
Finally, many great players come from the same kind of neighborhood---a poor, crowded area where a boy’s dream is not to be a doctor, lawyer, or businessman, but to become a rich, famous athlete or entertainer. For example, Liverpool, which produced the Beatles, had one of the best English soccer teams in recent years. Pele practiced in the street with a “ball” made of rags. And George Best learned the tricks that made him famous by bouncing the ball off a wall in the slums(贫民窟) of Belfast.
All great players have a lot in common, but that doesn’t explain why they are great. Hundreds of boys played in those Brazilian streets, but only one became Pele. The greatest players are born with some unique quality that sets them apart from all the others.
1.According to the writer, which of the following statements is true?
A. Soccer is popular all over the world, but truly great players are few.
B. Millions of people all over the world are playing soccer, but only seven countries have ever had famous stars.
C. Only seven countries from South America and Western Europe have ever had national teams.
D. Soccer seems the least popular in North America and Asia.
2.The world “tricks” at the end of Paragraph 2 is closest in meaning to ______.
A. experience B. training
C. skills D.cheating
3.The Brazilian streets are mentioned to show that ______.
A. a great soccer player may be born in a slum area
B. people in poor areas are born with some unique quality
C. children in poor areas start playing football at the age of three or four
D. famous soccer players live in slum areas
4.The writer mentions all the factors that may affect a soccer player’s success except ______.
A. his family background B. his neighborhood
C. his character D. his practice
高三英语阅读理解中等难度题查看答案及解析
Over the past year, companies have been rolling out electric scooters (踏板车) by the thousands in cities across the country from Milwaukee to Washington, D. C. to Lubbock, Texas. People download the app, find a nearby scooter and then just unlock and ride. But as these shared scooters have spread, so have concerns about safety.
Portland, Oregon in the middle of a four-month e-scooter pilot program. You see these scooters everywhere — parked on sidewalks (they don't require docking stations, which most shared bikes do), taking fast corners and going through traffic. But something you don't see much of helmets.
On a recent weekend, a 32-year-old woman who didn't want to give her name because she's breaking the city's helmet rule is riding for the first time with some of her friends. None of them are wearing helmets, which both the city and the scooter company require with good reason. “One of our friends almost just got run over. The brake lights on theirs don't work,” she says.
Part of the draw of these scooters is their flexibility — most riders we talked to jumped on a scooter on the spur of the moment. And, given the fact that most people would not want to share helmets with strangers they don't come with helmets attached. So people end up riding without any safety gear.
Yet this is against the rules, but many people just don’t want to carry around helmets. Data from bicycles suggest that people participating in share programs have lower rates of accidents than those using their own vehicle. And many transportation advocates point to the fact that helmet requirements deter bike usage.
Still helmets provide protection. Riding a scooter is very different from riding a bike.
And people on e-scooters are starting to show up in emergency rooms with injuries.” We've seen things from broken bones to punctured (刺穿) lungs.” says Catherine Juillard, a doctor at Zuckerberg San Francisco General Hospital.
1.What does the 32-year-old woman want to convey?
A.Riding a scooter is difficult. B.Riding a scooter is dangerous.
C.E-scooters are of poor quality. D.E-scooters bring great convenience.
2.Why are e-scooters not equipped with helmets?
A.Because of high cost. B.Because of people's habit.
C.Because they are not effective. D.Because they are not necessary.
3.What does the underlined word “deter” in Paragraph 5 probably mean?
A.Limit. B.Allow. C.Decide. D.Promote.
4.What would be the best title for the passage?
A.To Wear or Not to Wear helmets? B.E-Scooters Do More Harm Than Good.
C.How to Reduce the Risk of E-Scooters? D.With E-Scooters Come Safety Concerns.
高三英语阅读理解中等难度题查看答案及解析
________，the mayor's health care reform hasn't been accepted by all the people in the city yet．
A．As reasonable it may sound B．As it may sound reasonable
C．Reasonable as it may sound D．Reasonable as may it sound
高三英语单项填空简单题查看答案及解析