You probably know the name Christopher Robin from one of the most beloved children's books in history. But Christopher Robin Milne was a real person-the only child of Winnie the Pooh author A.A.Milne. It was his playtime in the woods with his parents and his favorite stuffed animal that inspired the series. However, the little boy would soon be thrust into the spotlight before he was even old enough for kindergarten, much less equipped to handle worldwide fame and recognition. Here's what Christopher Robin really thought of Winnie the Pooh and his own reluctant legacy(遗留下来的东西) as the hero of these stories.
Christopher Robin was born on August 21,1920.His father, Alan Alexander Milne, kept a home in London for the family, but they would often spend weekends at a country home called Cotchford Farm in East Sussex.That's the location that inspired many of the locales(故事发生的现场) in the books, including the Hundred Acre Wood. As for Winnie the Pooh, he was inspired by a real-life character, too. Well, sort of. A. A. Milne bought Christopher Robin a teddy bear named Edward Bear from Harrods of London for his first birthday, according to the New York Public Library. Christopher Robin renamed the bear Winnie after a real bear he saw at the London Zoo. Here's more about the real-life toys that inspired the other Winnie the Pooh characters.
The creation of the Winnie the Pooh stories was a family affair. In fact, A.A.Milne often credited his wife, Daphne, as a collaborator on the books because he was inspired by watching how she played with Christopher Robin, helping him bring the stuffed animals to life with different voices and personalities to suit each one.
The Winnie the Pooh sensation started with a short story that A.A.Milne wrote for the London Evening News. It was called “The Wrong Sort of Bees,” and it included Christopher Robin and his bear, Winnie the Pooh. But, according to the Smithsonian, the boy and his bear really rose to fame with the publication of A.A.Milne' s 1926 book that was illustrated by E.H. Shepard.
Fan mail poured in when people learned that there was a “real” Christopher Robin. The author would give his son those fan letters, introducing the little boy to his new, widespread fame. Christopher Robin was expected to respond to each fan letter with his nanny's help. He also appeared in a pageant(露天演出的历史剧)based on the Pooh characters and would participate in audio recordings of the books when he was only 7,which his cousin would later refer to as exploitation, according to the BBC.
Christopher Robin liked the Winnie the Pooh books at first, and he even enjoyed the fame. However, after a few years, those books that were so beloved to readers around the world became a burden to him. Christopher Robin went away to boarding school around the age of 9,at the height of Winnie the Pooch’s popularity, and he was bullied there. The other kids would play that record of Christopher Robin reading the poems about Winnie the Pooh and tease him mercilessly.
Plus, the real-life Christopher Robin was very different from the fictional character who shared his name, but people made the false assumption that he was truly like the character in the books. As a result, Christopher Robin felt very misunderstood. Here are more fictional characters you never knew were based on real people.
By 1929,A.A.Milne told reporters that he was “amazed and disgusted” by Christopher Robin's fame. Although he didn't go into detail about the problems that his son faced, the author felt that his son had already experienced more fame than he had intended or wanted for him. Realizing that his young son might be damaged by this, A.A.Milne swore never to write another children's book after the fourth Pooh book was published.
Still, as with most family situations, things were complicated. The Guardian reports that A.A. Milne was a bit in denial about the grave impact the fame had on his son, telling reporters on another occasion that Christopher Robin referred to himself as “Billy Moon” at home and claiming that the fame didn't impact them personally. That would prove to be untrue.
1.What happened to Christopher Robin after the series succeeded?
A.He stopped playing in the woods with his toys.
B.He became the center of worldwide attention.
C.He prepared himself for kindergarten education.
D.He refused to admit being the hero of these stories.
2.How did the creation of the Winnie the Pooh stories take place?
A.It resulted from Milne' s family cooperation.
B.It was inspired by Robin's first birthday party.
C.It was assisted by the real-life stuffed animals.
D.It began with a casual visit to a country home.
3.What do we know about the book The Wrong Sort of Bees by
A.It was cowritten by E.H.Shepard and A.A.Milne.
B.It helped the boy and his bear to achieve great fame.
C.It laid the base for the boy and his bear rising to fame.
D.It was published in 1926 according to the Smithsonian.
4.What was his cousin's attitude to Robin's participation in these activities?
A.Supporting. B.Aggressive.
C.Objective. D.Disapproving.
5.Why did Christopher Robin become tired of the fame after a few years?
A.Because he began to study in a boarding school.
B.Because he disliked the fictional character any more.
C.Because he shamed his name with the fictional character.
D.Because he suffered from the bullies and misunderstandings.
6.What does the underlined sentence in the last paragraph mean?
A.People might mask their true feelings for certain reasons.
B.People are likely to make family situations more complex.
C.People should be encouraged to tell the truth to reporters.
D.People can be influenced by complicated family situations.
高三英语阅读理解中等难度题
You probably know the name Christopher Robin from one of the most beloved children's books in history. But Christopher Robin Milne was a real person-the only child of Winnie the Pooh author A.A.Milne. It was his playtime in the woods with his parents and his favorite stuffed animal that inspired the series. However, the little boy would soon be thrust into the spotlight before he was even old enough for kindergarten, much less equipped to handle worldwide fame and recognition. Here's what Christopher Robin really thought of Winnie the Pooh and his own reluctant legacy(遗留下来的东西) as the hero of these stories.
Christopher Robin was born on August 21,1920.His father, Alan Alexander Milne, kept a home in London for the family, but they would often spend weekends at a country home called Cotchford Farm in East Sussex.That's the location that inspired many of the locales(故事发生的现场) in the books, including the Hundred Acre Wood. As for Winnie the Pooh, he was inspired by a real-life character, too. Well, sort of. A. A. Milne bought Christopher Robin a teddy bear named Edward Bear from Harrods of London for his first birthday, according to the New York Public Library. Christopher Robin renamed the bear Winnie after a real bear he saw at the London Zoo. Here's more about the real-life toys that inspired the other Winnie the Pooh characters.
The creation of the Winnie the Pooh stories was a family affair. In fact, A.A.Milne often credited his wife, Daphne, as a collaborator on the books because he was inspired by watching how she played with Christopher Robin, helping him bring the stuffed animals to life with different voices and personalities to suit each one.
The Winnie the Pooh sensation started with a short story that A.A.Milne wrote for the London Evening News. It was called “The Wrong Sort of Bees,” and it included Christopher Robin and his bear, Winnie the Pooh. But, according to the Smithsonian, the boy and his bear really rose to fame with the publication of A.A.Milne' s 1926 book that was illustrated by E.H. Shepard.
Fan mail poured in when people learned that there was a “real” Christopher Robin. The author would give his son those fan letters, introducing the little boy to his new, widespread fame. Christopher Robin was expected to respond to each fan letter with his nanny's help. He also appeared in a pageant(露天演出的历史剧)based on the Pooh characters and would participate in audio recordings of the books when he was only 7,which his cousin would later refer to as exploitation, according to the BBC.
Christopher Robin liked the Winnie the Pooh books at first, and he even enjoyed the fame. However, after a few years, those books that were so beloved to readers around the world became a burden to him. Christopher Robin went away to boarding school around the age of 9,at the height of Winnie the Pooch’s popularity, and he was bullied there. The other kids would play that record of Christopher Robin reading the poems about Winnie the Pooh and tease him mercilessly.
Plus, the real-life Christopher Robin was very different from the fictional character who shared his name, but people made the false assumption that he was truly like the character in the books. As a result, Christopher Robin felt very misunderstood. Here are more fictional characters you never knew were based on real people.
By 1929,A.A.Milne told reporters that he was “amazed and disgusted” by Christopher Robin's fame. Although he didn't go into detail about the problems that his son faced, the author felt that his son had already experienced more fame than he had intended or wanted for him. Realizing that his young son might be damaged by this, A.A.Milne swore never to write another children's book after the fourth Pooh book was published.
Still, as with most family situations, things were complicated. The Guardian reports that A.A. Milne was a bit in denial about the grave impact the fame had on his son, telling reporters on another occasion that Christopher Robin referred to himself as “Billy Moon” at home and claiming that the fame didn't impact them personally. That would prove to be untrue.
1.What happened to Christopher Robin after the series succeeded?
A.He stopped playing in the woods with his toys.
B.He became the center of worldwide attention.
C.He prepared himself for kindergarten education.
D.He refused to admit being the hero of these stories.
2.How did the creation of the Winnie the Pooh stories take place?
A.It resulted from Milne' s family cooperation.
B.It was inspired by Robin's first birthday party.
C.It was assisted by the real-life stuffed animals.
D.It began with a casual visit to a country home.
3.What do we know about the book The Wrong Sort of Bees by
A.It was cowritten by E.H.Shepard and A.A.Milne.
B.It helped the boy and his bear to achieve great fame.
C.It laid the base for the boy and his bear rising to fame.
D.It was published in 1926 according to the Smithsonian.
4.What was his cousin's attitude to Robin's participation in these activities?
A.Supporting. B.Aggressive.
C.Objective. D.Disapproving.
5.Why did Christopher Robin become tired of the fame after a few years?
A.Because he began to study in a boarding school.
B.Because he disliked the fictional character any more.
C.Because he shamed his name with the fictional character.
D.Because he suffered from the bullies and misunderstandings.
6.What does the underlined sentence in the last paragraph mean?
A.People might mask their true feelings for certain reasons.
B.People are likely to make family situations more complex.
C.People should be encouraged to tell the truth to reporters.
D.People can be influenced by complicated family situations.
高三英语阅读理解中等难度题查看答案及解析
You probably know about the Titanic, but it was actually just one of three state-of-the art(最先进的)ocean ships back in the day. The Olympic class ships were built by the Harland & Wolff ship makers in Northern Ireland for the White Star Line company. The Olympic class included the Olympic, the Britannic and the Titanic. What you may not know is that the Titanic wasn’t even the flagship of this class. All in all, the Olympic class ships were marvels of sea engineering,but they seemed cursed to suffer disastrous fates.
The Olympic launched first in 1910, followed by the Titanic in 1911, and lastly the Britannic in 1914. The ships had nine decks, and White Star Line decided to focus on marking them the most luxurious ships on the water.
Stretching 269.13 meters, the Olympic class ship were wonders of naval technology, and everyone thought that they would continue to be so for quite some time. However, all suffered terrible accidents on the open seas. The Olympic got wrecked before the Titanic did, but it was the only one survive and maintain a successful career of 24 years. The Titanic was the first to sink after famously hitting a huge iceberg in 1912. Following this disaster, the Britannic hit a naval mine in 1916 and subsequently sank as well.
Each ship was coal-powered by several boilers constantly kept running by exhausted crews below deck. Most recognizable of the ship designs are the ship’s smoke stacks, but the fourth stack was actually just artistic in nature and served no functional purpose. While two of these ships sank, they were all designed with double hulls(船体)believed to make them “unsinkable”, perhaps a mistaken idea that led to the Titanic’s and the Britannic’s tragic end.
The Olympic suffered two crashes with other ships and went on to serve as a hospital ship and troop transport in World War I. Eventually, she was taken out of service in 1935, ending the era of the luxurious Olympic class ocean liners.
1.Which of the following statements is TRUE about the three Olympic class ships?
A. They performed marvelously on the sea.
B. They could all break the ice in their way.
C. They all experienced terrible misfortunes.
D. They were models of modern engineering.
2.What did White Star line have in mind when it purchased the three ships?
A. Their capacity of sailing across all waters.
B. The utmost comfort passengers could enjoy.
C. Their ability to survive disasters of any kind.
D. The long voyages they were able to undertake.
3. might have led to the tragic end of the Titanic and the Britannic?
A. Their unscientific designs
B. Their captains’ misjudgment
C. The assumption that they were built with the latest technology
D. The belief that they could never sink with a double-layer body
4.In the end the ship Olympic .
A. was used to carry troops
B. was sunk in World War I
C. was converted into a hospital ship
D. was retired after her naval service
高三英语阅读理解中等难度题查看答案及解析
As you probably know, J.Paul Getty was one of the richest and moat successful American industrialists in history.Quite ambitious from an early age, Getty made his first million at age 23 in 1916.He later went on to found the Getty oil company, In 1957, Fortune magazine named him the richest living American and in 1966, the Guinness Book of Records named him as the world's richest private citizen.
Although he is highly regarded by vast numbers of people for his financial success, as a younger man, his drive to acquire power and money had a detrimental impact on other aspects of his life, particularly in his relationships with women.He was, at one point quoted assaying "A lasting relationship with a woman is only possible if you are a business failure.” He married five times, having children with four of these wives.He couldn’t seem to keep a marriage going for very long.His obsession with having a fortune and power alienated (疏远) each of his wives, eventually driving them away. His marriage with his first wife Jeanette lasted for only three years, with Allene for two years, Adolphine, four years, Ann, four years, and finally Louise, nineteen years.
Perhaps as a young man, Getty was willing to pay whatever price for financial success.Yet Paul came to feel some regret in regard to his life priorities as he approached his later years when he Wrote: "I hate and regret the failure of my marriages.I would gladly give all of my millions for just one lasting marriage success."
At the end of Getty's life, all of the wealth that he had got meant very little to him.It was only then that he became wise enough to understand what really mattered most.Despite all of his accomplishments, he died with great regret.
It' s a sad story and a cautionary tale for those of us who may have chosen to make career building our highest priority(优先权), thereby ignoring our relationships.Like any other living organism, relationships require care and attention in order to grow.Even the strongest relationships will he damaged, if there is not enough care.
1.What is Paragraph l mainly about?
A.People' s admiration for J.Paul Getty. |
B.How J.Paul Getty led his life. |
C.J. Paul Getty's achievements. |
D.How J.Paul Getty became rich. |
2.The underlined word "detrimental" in Paragraph 2 is the closest in meaning to "_________".
A.harmful | B.interesting | C.positive | D.demanding |
3.J.Paul Getty's marriage that lasted for the longest time was with _________.
A.Ann | B.Adolphine | C.Allene | D.Louise |
4.At the end of his life, what J.Paul Getty cares about most is the success in ________.
A.business | B.politics | C.marriage | D.education |
5.What is the author's conclusion from the passage?
A.Young people should focus an career - building. |
B.The strongest relationships between people won't be damaged. |
C.We should attend to the needs in relationships. |
D.Successful people don't care about relationships with others. |
高三英语阅读理解中等难度题查看答案及解析
If you’ve ever had to chop an onion,you probably know that it’s one of the most annoying cooking experiences.It just fills your eyes with tears.Scientists and farmers have been working on a solution to this problem for decades,and they’ve apparently come up with a tearless onion.
Called the“Sunion”,this new vegetable is the result of a natural cross-breeding program that’s been going on farms in Nevada and Washington since the 1980s.It’s supposedly a sweet,mild-tasting onion that doesn’t leave that strong,pungent aftertaste,but what really sets it apart from most other onion varieties is that it doesn’t cause teary eyes when it’s chopped.
When you cut into a normal onion,it releases a compound called lachrymatory-factor synthase,and’when that hits your eyes,your body produces tears.Now,the interesting thing about regular onions is that the amounts of lachrymatory-factor synthase increase the longer the vegetables are stored,so the older they,the more you cry.In Sunions,on the other hand,the levels of that annoying compound drop the more time goes by,until it no longer has any effect on your eyes when you cut it.
That’s what Sunion growers are claiming anyway,but reports from those lucky enough to have tried them seem to confirm these claims.The Huffington Post had three of its reporters chop some Sunions,and apparently,none of them shed a single tear.According to the Washington Post,they don’t have the pungency of regular onions and are so sweet that you can eat them“like popcorn”.
So the good news is that tearless onions are now a real thing.The bad news is that they are currently only grown in Washington and Nevada,and even though they are sold nationwide,they are still in relatively short supply.The first Sunion batches hit the shelves of grocery stores in December,but we’11 probably start seeing them in most grocery shops and supermarkets in the next few years,as more people learn about them.
1.What is special about the Sunion?
A. It’s easily chopped. B. It’s sweet and tastes strong.
C. It’s tearless and mild. D. It’s grown nationwide in the USA.
2.How does the author introduce the Sunion in Paragraph 3 ?
A. By comparison. B. By telling a story.
C. By giving examples. D. By asking questions.
3.What does the underlined word“pungency”in Paragraph 4 mean?
A. Round shape. B. Strong smell.
C. Special character. D. Medical function.
4.What can we conclude from the last paragraph?
A. The Sunion has been largely on the market.
B. The Sunion is still on trial at present.
C. The Sunion will soon be grown worldwide.
D. The author is confident about the future of the Sunion.
高三英语阅读理解中等难度题查看答案及解析
— Do you know the tower _____ in the heart of the city?
— You mean the one _____ from the Ming Dynasty?
A. locating; dated B. being located; dating
C. located; dating D. located; dated
高三英语单项填空中等难度题查看答案及解析
— Do you know the tower _____ in the heart of the city?
— You mean the one _____ from the Ming Dynasty?
A. locating; dated B. being located; dating C. located; dating D. located; dated
高三英语单项填空中等难度题查看答案及解析
The word doping is probably from the Dutch word dop, the name of an alcoholic drinks make of grape skins used by Zulu soldiers in order to encourage their bravery in battle. The term became current around the turn of the 20th century, originally referring to illegal drugging of racehorses. In 1928 the International Amateur Athletic Federation (IAAF) became the first to ban the use of doping. A reliable test method was finally introduced in 1974.
The practice of enhancing athletes’ performance through foreign substance or other artificial means, however, is as old as competitive sport itself. The most famous doping case of the 1980s concerned Ben Johnson, the 100-meter champion who tested positive for stanozolol(司坦咗醇) at the Olympic Games in Seoul, 1988.
The main front in the anti-doping war has rapidly shifted to blood doping since 1970s. Blood doping is the practice of adding red blood cells to the bloodstream in order to improve athletes’ performance. The blood is usually processed in order to create a concentration of red blood cells, and then freeze them until needed for transfusion(输血) back into the athlete shortly before the event. The extra red blood cells will deliver more oxygen and other essential elements to the athlete’s muscle tissues.
Just like any other problem, the only way to solve it is through education. Many high school sports programs now have people come in to talk to them about out the dangers of performance-enhancing drugs. Young players must be fully clear on the rules and what substances are banned. The NCAA (National Collegiate Athletic Association) has an easily accessible list of what substances are banned, how they are tested for and why they are banned on its website. This way, young players are clear on what they can put in their bodies. This is also a good way to educate players on the danger of the substances they may be tempted to use.
1.The word “enhancing” in the first sentence of the second paragraph means “_____”.
A.showing | B.directing | C.upsetting | D.improving |
2.What can we know from the third paragraph?
A.Blood doping is transferring one man’s blood into another |
B.Only blood doping exists in the anti-doping war in the 1970s. |
C.Blood doping is easy to be found and controlled by organizations. |
D.More oxygen in the blood helps improve an athlete’s performance. |
3.The word “people” in the second sentence of the fourth paragraph probably refers to _____.
A.teachers who teach P.E. lessons at school |
B.experts who do research in doping |
C.young people easy to be addicted to doping |
D.athletes involved in doping |
4.Which statement best matches the last paragraph?
A.Prevention is better than cure. |
B.Reading is to the mind what exercise is to the body. |
C.The best horse needs breaking, and the cleverest child needs teaching. |
D.A little learning is a dangerous thing. |
高三英语阅读理解极难题查看答案及解析
Taktak tabulaba?
You probably don’t know how to answer that question—unless you happen to be one of the about 430 people in the world who speak a language called Matukar Panau. Then you would know it means “What are we doing?” Matukar Panau is one of the world’s rarest languages. It is spoken in just two small coastal villages in Papua New Guinea.
Several years ago, David Harrison, a language expert didn’t know much about Matukar Panau either. No one had ever recorded or even studied its words and rules. With so few speakers, the language risked disappearing soon. It was endangered.
Harrison didn’t want that to happen to Matukar Panau. So in 2009, he set out for Papua New Guinea. His goal: use modern technology to help the remaining speakers preserve their native tongue.
But Matukar Panau is far from the only language facing loss. Studies suggest that by the end of this century, nearly half of the 7,000 languages now spoken worldwide could disappear. They’re in danger partly because the only people left speaking them are elderly adults, Harrison says. When those individuals die, their language will die with them. In addition, children may discard a native language and instead use more common global languages, such as Chinese, English or Spanish.
In the United States alone, 134 native American languages are endangered. Harrison says, “language hotspots” exist all over the world. These are places with endangered languages that haven’t been recorded. They include the state of Oklahoma, pockets of central and eastern Siberia, parts of northern Australia and communities in South America.
1.The purpose of using the question “Taktak tabulaba?” is to ________.
A. introduce a new foreign language
B. introduce the topic of the text
C. show the difficulty understanding Matukar Panau
D. stress the importance of Matukar Panau
2.What did Harrison go to PaPua New Guinea for?
A. Learning their native language.
B. Leaning their modern technology.
C. Helping preserve their endangered tongue.
D. Teaching the natives a new language.
3.The underline word “discard” in Paragraph 5 means _______.
A. get rid of
B. pick up
C. hear of
D. learn about
4.The last two paragraphs imply that endangered languages are _________.
A. dying quickly in Siberia
B. popular in some special places
C. becoming a worldwide problem
D. some native tongues
高三英语阅读理解中等难度题查看答案及解析
The Internet, as we know, is probably one of the greatest inventions of human history. Never before has the access to the collection of the world’s knowledge ever been more available. 1. Some people look to make use of the information you are providing to the Internet. Everything you do online leaves a small footprint.
There are a couple of steps you can take to make your adventures online a little safer and more secure. Let’s take a look at them.
Cover your tracks.
Whenever you visit a website, a small file is marked in your browser(浏览器), which is called a “cookie”. 2. This enables the webserver to know if you have been there before and it can tailor the presentation to your personal tastes. They are also how Facebook knows to serve you ads based on stuff you looked at on Amazon.
So what’s the harm in the cookie? Well, hackers can use the information stored in your cookies to edit a browsing history or with less secure cookies, take your passwords for some sites. If you want to protect yourself from your information being available to sites then you can turn off the generation of cookies in your browser. 3.
4.
The major browsers, Chrome, Internet Explorer, Firefox, and Safari are all built to be secure from snooping(窥探), but the people who write the code for the browsers are human and they make mistakes. 5. These are usually addressed very quickly, but it is important that you make sure your browser is up to date. Just like your operating system, new security patches are being applied all the time, you need to make sure you have them. Turning on automatic updates is something I highly recommend.
A.Use the latest browsers.
B.Change browsers frequently.
C.This will help protect you online.
D.That’s how the cookie works on our computer.
E.This great invention and resource is not without its dangers.
F.It is common for a security problem to pop up with a browser.
G.These cookies store information about who you are and what you looked at.
高三英语七选五中等难度题查看答案及解析
“Don’t talk to strangers ...” That is probably one of the ____ pieces of advice handed down from our parents. Yeah, they ____ well. Since there are bad people out there, it seems to be a good idea in order to help ____ us. And over the years we’ve learned how to keep our eyes ____ . We are used to making no eye contact with strangers.
___, the price that we pay for this ____ is that we grow up suspicious(表示怀疑的) of others and their motives. We tend to have a(n) ____ of strangers, which is neither necessary nor ______ as we grow older.
Most people out there are not sociopaths(反社会者). ____, most people are quite ____. What once protected us from bad people is now preventing us from establishing relationships with
___ people!
In general, you know that the random stranger standing next to you is very ____ to kidnap (绑架) you, yet the emotion of fear is ____ associated with talking to them. So you ____ do it. But you miss out on a lot by closing yourself off to new people like this.
Instead, you should actively ____ that people in general are friendly. Why? Because they are. Most people actually are nice. We are ____ creatures, and we welcome interactions with others. Think about it: when a stranger starts a(n) ____ with you, how do you usually ____ ?
Besides, you never know who you might ____. The person standing behind you in a line could one day be your best friend. It ____. But even if it's not that extreme, you never know if that person has a job opportunity for you, or is just a cool person who you would enjoy having a brief conversation with.
1.A. shortest B. worst C. longest D. best
2.A. meant B. planned C. spoke D. worked
3.A. inspire B. instruct C. change D. protect
4.A. up B. open C. down D. shut
5.A. Especially B. Thankfully C. Unfortunately D. Uncertainly
6.A. safety B. health C. power D. delight
7.A. anger B. pain C. shame D. fear
8.A. important B. obvious C. humorous D. reasonable
9.A. In case B. In fact C. At times D. At first
10.A. brave B. friendly C. smart D. patient
11.A. bad B. famous C. good D. common
12.A. ready B. Unlikel C. eager D. unwilling
13.A. still B. never C. only D. even
14.A. always B. often C. sometimes D. seldom
15.A. doubt B. assume C. guess D. decide
16.A. living B. complex C. unique D. social
17.A. meeting B. experiment C. argument D. conversation
18.A. listen B. connect C. react D. devote
19.A. hurt B. forget C. meet D. benefit
20.A. happens B. depends C. affects D. fails
高三英语完形填空中等难度题查看答案及解析