The age at which kids first fall victim to bullying (欺侮)could influence how strongly they are affected,suggests a new study. And,surprisingly,it is not the youngest kids who are hurt the most in the long term.
Bullying can have long-lasting effects,but particularly when it begins in adolescence,the researchers say. People subjected to either verbal ( 口头 上的)or physical bullying are known to be at greater risk of developing depression,anxiety disorders or to behave violently. But not everyone reacts in this way.
Children bullied for the first time before they hit adolescence seem to get over it, but those who are bullied for the first time later on in adolescence seem to become more aggressive or are more likely to turn to drink as a means of coping. These are the conclusions of psychologist Matthew Newman and colleagues from the University of Texas at Austin,US.
The team gave questionnaires to nearly 1,500 college students regarding their experience of physical and psychological bullying before adolescence—before high school—and in late adolescence—at high school. They assessed mood and mental state,judging by signs of anxiety or depression,such as sleeplessness. The group was also questioned about how they would react to certain challenges,such as humiliation.
People who were bullied all revealed slightly higher levels of stress. But while those bullied earlier in life seemed to respond normally to provocation (杉匕畔),people bullied for the
first time late in adolescence are more withdrawn and sensitive to violence.
There are also sex differences between those bullied for the first time during adolescence, with females more likely to react aggressively when provoked and males are much more likely to turn to alcohol to escape bad situations.
The best solution in all cases was strong social support,whether from friends,family or school. Those with no one to share their problems with suffered the most.
So perhaps it is best not to shelter children completely from bullying early on,suggests Newman. “They may get stressed,but unhealthy coping really jumps out when they are bullied for the first time later on. ”
1.What determines the degree of bullying’s effect on people according to the study?
A.The reason why they are bullied.
B.The place where they are first bullied.
C.The age at which they are first bullied.
D.The person who first bullies them.
2.What may happen to those first bullied later on in adolescence according to Newman and his colleagues?
A.Some are likely to be more aggressive.
B.They seem to easily get over the effect of bullying.
C.Most of them will respond to bullying normally.
D.Most of them are afraid of sharing their problems.
3.What does the underlined word "humiliation"in Paragraph 4 mean?
A. Carrying out an important plan.
B.Being made to feel ashamed.
C. Trying hard to survive an accident.
D. Feeling hopeless in an emergency.
4.The sex differences between people bullied for the first time during adolescence are reflec ted in .
A. the support they get from the society
B.the effect bullying has on them
C. the way they react to provocation
D. the type of bullying they receive
高三英语阅读理解中等难度题
The age at which kids first fall victim to bullying (欺侮)could influence how strongly they are affected,suggests a new study. And,surprisingly,it is not the youngest kids who are hurt the most in the long term.
Bullying can have long-lasting effects,but particularly when it begins in adolescence,the researchers say. People subjected to either verbal ( 口头 上的)or physical bullying are known to be at greater risk of developing depression,anxiety disorders or to behave violently. But not everyone reacts in this way.
Children bullied for the first time before they hit adolescence seem to get over it, but those who are bullied for the first time later on in adolescence seem to become more aggressive or are more likely to turn to drink as a means of coping. These are the conclusions of psychologist Matthew Newman and colleagues from the University of Texas at Austin,US.
The team gave questionnaires to nearly 1,500 college students regarding their experience of physical and psychological bullying before adolescence—before high school—and in late adolescence—at high school. They assessed mood and mental state,judging by signs of anxiety or depression,such as sleeplessness. The group was also questioned about how they would react to certain challenges,such as humiliation.
People who were bullied all revealed slightly higher levels of stress. But while those bullied earlier in life seemed to respond normally to provocation (杉匕畔),people bullied for the
first time late in adolescence are more withdrawn and sensitive to violence.
There are also sex differences between those bullied for the first time during adolescence, with females more likely to react aggressively when provoked and males are much more likely to turn to alcohol to escape bad situations.
The best solution in all cases was strong social support,whether from friends,family or school. Those with no one to share their problems with suffered the most.
So perhaps it is best not to shelter children completely from bullying early on,suggests Newman. “They may get stressed,but unhealthy coping really jumps out when they are bullied for the first time later on. ”
1.What determines the degree of bullying’s effect on people according to the study?
A.The reason why they are bullied.
B.The place where they are first bullied.
C.The age at which they are first bullied.
D.The person who first bullies them.
2.What may happen to those first bullied later on in adolescence according to Newman and his colleagues?
A.Some are likely to be more aggressive.
B.They seem to easily get over the effect of bullying.
C.Most of them will respond to bullying normally.
D.Most of them are afraid of sharing their problems.
3.What does the underlined word "humiliation"in Paragraph 4 mean?
A. Carrying out an important plan.
B.Being made to feel ashamed.
C. Trying hard to survive an accident.
D. Feeling hopeless in an emergency.
4.The sex differences between people bullied for the first time during adolescence are reflec ted in .
A. the support they get from the society
B.the effect bullying has on them
C. the way they react to provocation
D. the type of bullying they receive
高三英语阅读理解中等难度题查看答案及解析
When facing bullying(欺凌), some kids are hesitant to bring up struggles at school. Open the lines of communication between you and your kids with these important reads.
LlamaLlama and the Bully Goat
Finding story books about bullying isn’t easy, especially if you are concerned about scaring your young child. In the light-hearted picture book by Anna Dewdney, LlamaLlama comes face to face with a bully for the very first time. This fun book is a great way to start tallying about being kind and speaking up when someone is using mean words and is written for children from 2 to 5 years old.
I Like Myself
A child who loves herself will face bullying with confidence and feel strong enough to stand up for what is right. From! Like Myself by Karen Beaumont, kids can learn that being themselves is enough from this light-hearted read. Written for preschool-aged children and older, use the silly pictures and fun rhymes to start talking to your kids about feeling strong and confident in who they are, no matter what others say.
Stand Tall, Molly Lou Melon
Molly Lou Melon is different, but that has never mattered before. In Stand Tall, Molly Lou Melon, a bully picks on Molly on the very first day of school and because of the things that make her different. Instead of coming to terms with being laughed at, Molly knows how to stand up for herself. Written for preschoolers and up, this book is a great way to open up a conversation about how to handle bullying if your kids are being teased or witnessing bullying at school.
The Bully from the Black Lagoon
The Bully from the Black Lagoon is a newer addition to the popular series of Black Lagoon books by Mike Thaler and Jared Lee and is written for kids aged 4 to 8. When a new kid named Butch Pounder joins his school, Hubie is worried that he is a bully. The truth is, Butch is just looking for a friend. This book could be a great way to start a conversation about not judging others based on appearance.
1.Who would be the target readers of these books?
A. Children and parents. B. Children and teenagers.
C. Teachers and students. D. Parents and educators.
2.What can we learn about Llama Llama and the Bully Goat?
A. Its written for preschoolers and up.
B. It is a picture book with scaring stories.
C. It advises kids to be brave to express themselves.
D. It tells of the writer’s own experience with a bully.
3.Which book tells kids not to judge a book by its cover1?
A. Llama Llama and the Bully Goat. B. The Bully from the Black Lagoon.
C. Stand Tall # Molly Lou Melon. D. I Like Myself.
高三英语阅读理解中等难度题查看答案及解析
Some kids start to drink alcohol (酒精) at a young age. They think it is part of becoming an adult.They also think drinking is not that bad because so many people do it.They feel it is not as bad as taking drugs (毒品). It is easy for kids to get liquor(酒精饮料)by using fake identification (伪造证件).
Parents may start to notice a change in their child’s behavior if the child starts drinking. Kids who drink sometimes stop doing things they normally liked to do.They may keep telephone calls and meetings a secret and not want anybody to touch their things.They act moody(喜怒无常) and do not have the same eating and sleeping habits.
Parents need to stay involved (牵涉) in their kids’ lives. They should talk to their children about their problems to be aware of any changes.
Parents can be the best protection. Children who get a lot of love can feel good about themselves. It helps them resist(抵抗) doing bad things even when other kids are doing them. Parents can also help set a good example by not drinking and driving. They can have firm rules in the home that everyone follows.
Give the children good ideas on how to say “no” to drinking, even when they are at a party. Try not to overreact or panic (惊慌) if the child tries alcohol. How you handle it can affect their attitude. It may be helpful to talk to other parents about setting up curfews (宵禁令) and rules about parties or other events.
1.Which of the following is NOT the reason why some kids have an early start of drinking?
A.They want to show their maturity (成熟) by drinking alcohol.
B.Drinking alcohol is much cooler than taking drugs.
C.They are affected by many other people around them.
D.They can get liquor easily.
2.According to the passage, what changes may happen to the kids who start drinking?
A.Nothing serious will happen to them.
B.They keep the same eating and sleeping habits.
C.They can control their moods quite well.
D.Sometimes they act secretly.
3.According to the writer, if parents find their children try alcohol, they had better ________.
A.punish them at once
B.ask the police for help
C.ask their children’s friends for help
D.set up curfews and rules about parties or other events with other parents
4.Which is the main subject discussed in the passage?
A.Teen health. B. Teen education.
C.Teen drinking D. Parents’ worries.
高三英语阅读理解中等难度题查看答案及解析
In the famous fairy tale, Snow White eats the Queen's apple and falls victim to a curse(诅咒);in Shakespeare's novel, Romeo drinks the poison and dies; some ancient Chinese emperors took pellets(药丸)that contained mercury(水银), believing that it would make them immortal, but they died afterward.
Poison has long been an important ingredient in literature and history, and it seems to always be associated with evil, danger and death. But how much do you really know about poison?
An exhibition, The Power of Poison, opened last month at the American Museum of Natural History in New York, intended to give the audience a more vivid understanding of poison.
The museum tour starts in a rainforest setting, where you can see live examples of some of the most poisonous animals: caterpillars(毛毛虫), frogs and spiders. Golden poison frogs, for instance, aren't much bigger than a coin, but their skin is covered with a poison that can cut off the signaling power of your nerves, and a single frog has enough venom to kill 10 grown humans.
"Poisons can be bad for some things," Michael Novacek, senior vice president of the museum, told NBC News. "Yet they can also be good for others."
A poisonous chemical found in the yew tree is effective against cancer, which is what led to the invention of a cancer-fighting drug called Taxol.
The benefits from natural poisons are not limited to just medicine. Believe it or not, many substances(物质)that we regularly ingest(摄入)-chili, coffee and chocolate-owe their special flavors or stimulating(提神的)effects to chemicals that plants make to poison insects.
1.What does the underlined word "immortal" in Paragraph 1 mean?
A. happy B. not moral
C. living forever D. sick
2.What is the main purpose of the exhibition The Power of Poison?
A. To give people more in-depth knowledge about poison.
B. To teach people how to handle poisonous animals.
C. To inform people about which animals are the most poisonous.
D. To show how poison has been used for medical treatment.
3.Which of the following statements about the Golden poison frog is TRUE according to the article?
A. Its skin can cut off the signaling power of your nerves.
B. It's about the size of a coin.
C. It's the most poisonous animal on display.
D. You can only see it in a rainforest setting of the museum.
4.The stimulating effects of coffee come from ________.
A. natural poison made by the plant
B. the substances that we regularly ingest
C. chemicals produced by poisonous insects
D. its special flavor
高三英语阅读理解中等难度题查看答案及解析
C
Chinese students have tended to come to the UK at a younger age in recent years, which means they come to Britain not only for higher education, but also for high school or even primary school. Asian investors(投资者) have followed this trend, and started to buy independent schools to serve this demand.
An article carried by the Times of London on October 17 reported that last year Chinese-owned company Achieve Education bought Chase Grammar, a boarding and day school in Cannock, Staffordshire. Chase Grammar includes a program that offers extra support for pupils from China. “ This trend is very good and I am not at all surprised,” Barnaby Lenon, chairman of the Independent Schools Council, told the Global Times, adding that Chinese people like the English education system. “ We welcome Chinese investors in British private education.” “Chase Grammar School is small, and the classes are small. It gives the school a family atmosphere,” Jackie Medhurst, principal of Chase Grammar School, said in a welcome note on the school’s website.
Small class sizes, personal care, good exam result, and entry to world famous universities are features that are most attractive to Chinese students. But many parents are also worried that foreign investors might expand the proportion of international students, and that might undermine the British tradition.
It seems that Chase Grammar does not intend to hide their attempts to attract Chinese families. It has set up a China office in Shanghai to facilitate Chinese parents’ communication with the school. Tong Zhou, a director of Chase Grammar, told the media that the school does not intent to change the ratio of local students and international students.
Some international branches of British boarding schools are very popular in Asia. In recent years, the Chinese passion for the British boarding school system has led some of the best-known schools such as Harrow and Wellington to set up satellite schools in Beijing, Shanghai and Hong Kong. And the trend continues.
It seems that the rising wealthy class in Asia is not satisfied with international branches in their own countries. They want to send their kids to the original British boarding schools to be surrounded by English people and immersed in the British culture. To support their children studying in the UK, Chinese parents are buying houses in Britain. According to a survey by UK Property Weekly, houses near universities and outstanding primary and secondary schools are the most preferable location for Chinese buyers.
Compared to the independent school system, universities are more open. It is reported that China remains the leading source of international students for London.
1.Which of the following can we know from Barnaby Lenon’s words?
A. He was surprised at the present current trend.
B. English universities are better than those in China.
C. The English education system is welcomed by the Chinese.
D. There will be fewer investors in private education.
2. Which of the following is NOT among the attractions of the British schools?
A. The small size of classes.
B. The entry to world-famous universities.
C. Good exam results.
D. Good living conditions.
3.The underlined word “ undermine” in paragraph 3 is closest in meaning to “______”.
A. weaken B. strengthen C. follow D. overcome
4. Chinese parents are buying houses in order to ______.
A. invest more money
B. support their children’s education
C. show off their ability
D. compete with other parents
高三英语阅读理解中等难度题查看答案及解析
Britain's oldest man made his first visit to London yesterday at the age of 110. Mr. John Evans had never found the time or the money-to make the trip from his home near Swansea. But, when British Rail offered him an all-expenses-paid birthday trip to the capital, he just could not refuse.
Until yesterday he had never been far from home, except for one trip to Aberdeen. Mr. Evans, who spent 60 years working as a miner in South Wales, almost made the journey to London once before, at the turn of the century. "There was a trip to the White City but it was ten shillings (1 shilling =" 1/20" pound) return from Swansea—too much I thought. All my money went to the family then." he said.
During the next two days Mr. Evans will be taken on a whistle-stop tour of London to see the sights. Top of his list is a visit to the Houses of Parliament(国会).
The only arrangement he does not care for is the wheelchair provided to move him about if he gets tired. "I don't like the chair business--people will think I am getting old," he said.
His secret for a long and healthy life has been well publicized--no alcohol, no cigarette and no anger. Before setting off from Swansea with his 76-year-old son, Amwel, he quipped," I'm glad to see they've given me a return ticket. "
1.It was reported that Mr. Evans's healthy long life was to a certain extent due to his ______.
A.wine drinking | B.proper smoking | C.mild temper | D.sense of humor |
2. Which of the following statements is true?
A.A single trip from Mr. Evans's home to the White City used to be ten shillings. |
B.The first place for Mr. Evans to visit is the Houses of Parliament. |
C.He appreciated people's arrangement of a wheelchair during his visit. |
D.Mr. Evans once made the journey to London at the turn of the century. |
3.The word "quip" in the last sentence most probably means _______.
A.to make a witty remark | B.to express a happy message |
C.to make a wish | D.to tell a joke |
4.What might be the best title for this passage?
A.110-Year-Old Tourist | B.Secret for Long and Healthy Life |
C.Free Return Ticket | D.Sightseeing in London |
高三英语阅读理解中等难度题查看答案及解析
Britain’s oldest man made his first visit to London yesterday at the age of 110. Mr. John Evans had never found the time or the money – to make the trip from his house near Swansea. But, when British Rail offered him an all-expenses-paid birthday trip to the capital, he just could not refuse.
Until yesterday he had never been far from home, except for one trip to Aberdeen. Mr. Evans, who spent 60 years working as a miner in South Wales, almost made the journey to London once before, at the turn of the century. “There was a trip to the White City but it was ten shillings (1 shilling ="1/20" pound) return from Swansea – too much I thought. All my money went to the family then, “he said.
During the next two days Mr. Evans will be taken on a whistle–stop tour of London to see the sights. Top of his list is a visit to the Houses of Parliament (国会).
The only arrangement he does not care for is the wheelchair provided to move him about if he gets tired. “I don’t like the chair business – people will so think I am getting old,” he said.
His secret for a long and healthy life has been well publicized–no alcohol, no cigarette and no angry. Before setting off from Swansea with his 76-year-old son, Amwel, he quipped, “I’m glad to see they’ve given me a return ticket. ”
1.It’s reported that Mr. Evans’s healthy long life was to a certain extent due to his _____.
A.wine drinking | B.proper smoking |
C.mild temper | D.sense of humor |
2.Which of the following statements is true?
A.A single trip from Mr. Evans’s house to the White City used to be ten shillings. |
B.The first place for Mr. Evans to visit is the Houses of Parliament. |
C.He appreciated people’s arrangement of a wheelchair during his visit |
D.Mr. Evans once made the journey to London at the end of the century. |
3.The word “quip” in the last sentence most probably means _____.
A.to make a witty remark | B.to express a happy message |
C.to make a wish | D.to tell a joke |
4.What might be the best title for this passage?
A.110-year-old Tourist | B.Secret for Long and Healthy Life |
C.Free Return Ticket | D.Sightseeing in London |
高三英语阅读理解中等难度题查看答案及解析
Britain’s oldest man made his first visit to London yesterday at the age of 101. Mr. John Evans had never found the time or money to make the trip from his home in Forest Fach, near Swansea. But, when British Rail offered him an all-expense-paid birthday treat to the capital he just could not refuse.
He arrived at Paddington Station and smartly turned out in his best suit, favorite Panama hat and a red rose in his buttonhole. “It’s very exciting. There’s no doubt about it,” he said.
Until yesterday he had never been far from home, except for one trip to Aberdeen. “But I’ve been on the seas to that faraway land called Ilfracombe 21 miles from home,” he joked.
Mr. Evans, who spent 60 years working as a miner in South Wales, almost made the journey to London once before, at the turn of the century. “There was a trip to the White City but it was ten shillings return from Swansea – too much I thought. All my money went to the family then,” he said.
During the next two days Mr. Evans will be taken on a short tour of London to see the sights. Top of his list is a visit to the House of Parliament organized by his MP, Mr. Gareth Wardell.
The only arrangement he does not care for is the wheelchair provided for him if he gets tired. “I don’t like the chair – people will think I am aging,” he said. His secret for a long and healthy life has been well publicized – no wine, no tobacco and no anger.
Before setting off from Swansea with his 76 – year – old son, Amwell, he said jokingly, “I’m glad to see they’ve given me a return ticket.”
1.The very reason that Mr. Evans didn’t go to see the world is that _______.
A. he had already been on the seas to Ilfracombe
B. he was too busy to go too far away from home
C. he believed “East or west, home is the best”
D. he couldn’t afford both the time and the money
2.Mr. Evans didn’t like the wheelchair simply because _______.
A. he was not used to traveling in it
B. the wheelchair was of poor quality and not easy to operate
C. he thought he was still young enough to manage the trip
D. he actually preferred walking to sitting in it at home
3.Which of the following is NOT true according to the passage?
A. Mr. Evans had to pay for the return ticket.
B. The trip to London excited Mr. Evans very much.
C. Mr. Evans had to work hard to raise his family when young.
D. Humor was one of Mr. Evans’ characters.
4.The probable explanation to Mr. Evans’ long life lies in _______.
A. his sticking to his hometown
B. his hard working for the family
C. his good living habits
D. his living conditions near the Swansea
高三英语阅读理解中等难度题查看答案及解析
Britain’s oldest man made his first visit to London yesterday at the age of 101.Mr John Evans had never found the time or money to make the trip from his home in Forest – fach, near Swansea.But, when British Rail offered him an all – expense – paid birthday treat to the capital he just could not refuse.
He arrived at Paddington Station and smartly turned out in his best suit, favorite Panama hat and a red rose in his buttonhole.“It’s very exciting.There’s no doubt about it,” he said.
Until yesterday he had never been far from home, except for one trip to Aberdeen.“But I’ve been on the seas to that faraway land called Ilfracombe 21 miles from home,” he joked.
Mr Evans, who spent 60 years working as a miner in South Wales, almost made the journey to London once before, at the turn of the century.“There was a trip to the White City but it was ten shillings return from Swansea – too much I thought.All my money went to the family then,” he said.
During the next two days Mr Evans will be taken on a short tour of London to see the sights.Top of his list is a visit to the House of Parliament organized by his MP, Mr Gareth Wardell.
The only arrangement he does not care for is the wheelchair provided for him if he gets tired.“I don’t like the chair – people will think I am getting old,” he said.His secret for a long and healthy life has been well publicized – no wine, no tobacco and no anger.
Before setting off from Swansea with his 76 – year – old son, Amwell, he said jokingly, “I’m glad to see they’ve given me a return ticket.”
1.The very reason that Mr.Evans didn’t go to see the world is that ________.
A.he had already been on the seas to Ilfracombe
B.he was too busy to go too far away from home
C.he couldn’t afford both the time and the money
D.he believed “East or west, home is the best”
2.Mr Evans didn’t like the wheelchair simply because ________.
A.he was not used to traveling in it
B.the wheelchair was of poor quality and not easy to operate
C.he actually preferred walking to sitting in it at home
D.he thought he was still young enough to manage the trip
3.Which of the following is NOT true according to the passage?
A.Mr Evans had to work hard to raise his family when young.
B.The trip to London excited Mr Evans very much.
C.Mr Evans could not really enjoy the trip because of his age.
D.Humor was one of Mr Evans’ characters.
4.The probable explanation to Mr Evans’ long life lies in ________.
A.his good living habits
B.his hard working for the family
C.his sticking to his hometown
D.his living conditions near the Swansea
高三英语阅读理解中等难度题查看答案及解析
I wrote my first poem at the age of seven and showed it to my mother. She read and cried, “Buddy, you really wrote a beautiful poem!”
Shyly but_______, I said yes. She poured out her praise. “It was _______ short of talent!”
“What time will Father be home?” I asked. I could hardly wait to_______my work to him. I spent quite some time_________for his arrival. I wrote the poem out in my finest handwriting, drew a fancy border around it and_______I placed it right on my father’s plate on the dining table. My father had begun his motion-picture career as a writer. I was sure he would be able to_______my poem.
At almost 7 o’clock my father burst in. He seemed upset. He circled the dining-room table, complaining about his employees.
Suddenly he paused and _______his plate. “What is this?” He was reaching for my poem.
“Ben, Buddy has written his first poem!” my mother began. “And it’s beautiful, absolutely amaz…”
“If you don’t mind, I’d like to decide for myself.” Father said.
I_______my head as he read that poem. It was only ten lines. But it seemed to take hours. Then I heard him dropping the poem back on the table. Now came the moment of_______.“I think it’s terrible,” he said. I couldn’t look up. My eyes were getting________.“Ben, these are the first lines of poetry he’s ever written,” my mother was saying. “He needs encouragement.”
“I don’t know why.” My father held his________. “Isn’t there enough awful poetry in the world already?”
I couldn’t________it another second. I ran from the dining room crying. Up in my room I________myself on the bed and cried the worst of the________out of me.
That may have been the end of the story, but not of its________for me. I realized how fortunate I had been. I had a mother who said, “I think it’s wonderful!” and a father who drove me to hear with “I think it’s________.”
Every one of us needs that mother force, from which all________flows; and yet the mother force alone is incomplete. It needs the balance of the force that ________, “Watch. Listen. Review. Improve.”
Those________voices of my childhood ring in my ears through the years, like two opposing winds blowing me. Between the two poles of ________and doubt, both in the name of love, I try to follow my true course.
1.A.typically B.proudly C.anxiously D.honestly
2.A.something B.obviously C.definitely D.nothing
3.A.demonstrate B.describe C.recite D.illustrate
4.A.waiting B.praying C.preparing D.planning
5.A.gradually B.confidently C.desperately D.casually
6.A.appreciate B.revise C.read D.polish
7.A.stared at B.glanced at C.glared at D.looked at
8.A.shook B.lowered C.raised D.turned
9.A.decision B.excitement C.meditation D.devotion
10.A.dark B.wide C.wet D.bright
11.A.tongue B.position C.interest D.ground
12.A.tolerate B.contain C.control D.approve
13.A.placed B.threw C.spread D.kept
14.A.confusion B.pressure C.disappointment D.tiredness
15.A.challenge B.development C.difficulty D.significance
16.A.elegant B.awful C.brilliant D.controversial
17.A.failure B.limit C.creation D.improvement
18.A.cautions B.misleads C.orders D.foresees
19.A.inspiring B.warning C.discouraging D.conflicting
20.A.confirmation B.restriction C.distrust D.disapproval
高三英语完形填空中等难度题查看答案及解析