There are some special traditions in Hawaii. ...

There are some special traditions in Hawaii. People are very friendly and always welcome visitors. They give visitors a lei, a long necklace（项链）of beautiful fresh flowers. Men wear bright flowered shirts, and women often wear long flowered dresses. There are traditional Chinese, Japanese and Philippines holidays and all the holidays from the United States. They call Hawaii the Aloha State. Aloha means both hello and goodbye. It also means I love you.

Usually when people from different countries, races and traditions live together, there are serious problems. There are a few problems in Hawaii, but, in general, people have learned to live together in peace.

Hawaiians get most of their money from visitors, and most of the visitors come from the mainland and from Japan. There are so many people living in Hawaii now that there are residential (居住的) areas where there used to be farms. Some of the big sugar and apple companies have moved to the Philippines, where they do not have to pay workers as much money. The families of the first people who came from the U.S. mainland own the important banks and companies. Japanese are also buying or starting business.

1.A lei is _______.

A. a group of flowers                                B. a bright flowered shirt

C. a way to say hello and goodbye             D. a necklace of flowers

2._______ plays an important part in the development of Hawaii.

A. Industry               B. Agriculture           C. Business               D. Tourism

3.The author wants to show that ______.

A. we should all go to Hawaii

B. it is possible to learn to live together in peace

C. Hawaii is too small for big companies to develop

D. Hawaii is the only place where there is peace

4.A good title for this article might be ______.

A. Hawaii—the Aloha State                       B. Living in Peace Together

C. The Flower of Hawaii                       D. The Problems of Hawaii

高三英语阅读理解中等难度题查看答案及解析

Here are some traditional German beer games .

Beer Boot Pass

A very , very popular game played in Germany is the beer boot pass ( Bier Boot ) , which has gained popularity all over the world . The game is usually played to pin the next round of beer on a person . In this , a full glass of beer is passed around in the group—there are some rules for this—it has to be tipped every time before it is passed and not a drop of beer must be spilled . The second-to-last person who finishes the beer must pay for the next round . The game then becomes all about judgment because either you drink the entire beer or have a sip and pass it on . You never know who the second to last person will be , so the uncertainty and excitement makes the game a favorite .

Beer Crate-Running

This is a traditional game that is extremely popular in Germany , Switzerland , and Austria , more popularly referred to as Kastenlauf . The game is similar to running a race , where a route is marked , ranging from anywhere between 5-12 km . Each participant brings a crate of beer ( the size and quantity will be specified ) . The first person who success fully finishes the entire crate of beer before getting to the finish line wins .

Flunkyball

This outdoor game is played with one team being matched against another , with equal numbers in both . The teams stand on opposite sides of the ground in a line , with their beers lined before them . An empty bottle or a tin can is placed in the center and another object ( used as an aim ) is brought in , something like a tennis ball . The first team ( A ) hits the ball onto the target to tumble（打翻）it . Once the bottle has tumbled , team A will start drinking their beers . Meanwhile , team B must run to the center , place the bottle upright , find the ball , and cross back into the line before yelling ‘ Stop ’ . Team A then stops drinking and team B starts to throw the ball at the bottle and carrying forward the game . The game continues till one team has finished all their beer and they are declared winners .

Drinking Relay

Divide the group of people into two teams and get them to stand in a line with beer placed in front of each member . At the blow of the whistle , the first person lifts the glass and starts drinking the beer . After he is done , he has to turn the glass over to show that there is no more beer in the glass . Then , the next person starts drinking and so on . The next in line can only drink when the first person has emptied his glass . The team whose last member empties the glass ahead of others wins .

Herman the German

Even though this game seems simple , it is a lot of fun . It runs on the lines of ‘ Who stole the cookie ’ . A person is chosen as ‘ Herman the German ’ ( HTG ) and he has to get the game running . The other members sit in a random manner and are given names , better if they are confusing names like China Port No. 1 , Rum Master Blaster etc . The game starts with HTG saying – “ HTG dropped a missile on China Port No. 1 , sir ” and China Port No. 1 has to reply with – “ It wasn’t me , sir . ” Then HTG replies – “ Who then , sir ” and it goes on . The sentence has to end with ‘ sir ’ and if it doesn’t , then the player has to down a beer . Similarly , if at any point the players fumble , they have to do the same . The tension makes the players forget things and there’s a whole lot of beer flowing as a result .

1.Which two games have something to do with running ?

A. Beer Boot Pass and Beer Crate-Running

B. Flunkyball and Drinking Relay

C. Beer Crate-Running and Flunkyball

D. Drinking Relay and Herman the German

2. The loser will have to buy beers for others in the game __________ .

A. Beer Boot Pass　　　　　　　　　　 B. Beer Crate-Running

C. Flunkyball　　　　　　　　　　　　 D. Drinking Relay

3.A person with a good memory may have a advantage in playing __________ .

A. Beer Boot Pass　　 B. Flunkyball

C. Drinking Relay　 　 D. Herman the German

4.Which of the following statements is listed as a rule of the games ?

A. Every person has to sip the beer when playing Beer Boot Pass .

B. The person who replies to HTG with “ sir ” at the end will be punished .

C. The team can start drinking their beers as soon as they throw the ball in Flunkyball

D. The team members have to drink their beers in turn when playing Drinking Relay .

高三英语阅读理解中等难度题查看答案及解析

Here are some traditional German beer games .

Beer Boot Pass

A very , very popular game played in Germany is the beer boot pass ( Bier Boot ) , which has gained popularity all over the world . The game is usually played to pin the next round of beer on a person . In this , a full glass of beer is passed around in the group—there are some rules for this—it has to be tipped every time before it is passed and not a drop of beer must be spilled . The second-to-last person who finishes the beer must pay for the next round . The game then becomes all about judgment because either you drink the entire beer or have a sip and pass it on . You never know who the second to last person will be , so the uncertainty and excitement makes the game a favorite .

Beer Crate-Running

This is a traditional game that is extremely popular in Germany , Switzerland , and Austria , more popularly referred to as Kastenlauf . The game is similar to running a race , where a route is marked , ranging from anywhere between 5-12 km . Each participant brings a crate of beer ( the size and quantity will be specified ) . The first person who success fully finishes the entire crate of beer before getting to the finish line wins .

Flunkyball

This outdoor game is played with one team being matched against another , with equal numbers in both . The teams stand on opposite sides of the ground in a line , with their beers lined before them . An empty bottle or a tin can is placed in the center and another object ( used as an aim ) is brought in , something like a tennis ball . The first team ( A ) hits the ball onto the target to tumble（打翻）it . Once the bottle has tumbled , team A will start drinking their beers . Meanwhile , team B must run to the center , place the bottle upright , find the ball , and cross back into the line before yelling ‘ Stop ’ . Team A then stops drinking and team B starts to throw the ball at the bottle and carrying forward the game . The game continues till one team has finished all their beer and they are declared winners .

Drinking Relay

Divide the group of people into two teams and get them to stand in a line with beer placed in front of each member . At the blow of the whistle , the first person lifts the glass and starts drinking the beer . After he is done , he has to turn the glass over to show that there is no more beer in the glass . Then , the next person starts drinking and so on . The next in line can only drink when the first person has emptied his glass . The team whose last member empties the glass ahead of others wins .

Herman the German

Even though this game seems simple , it is a lot of fun . It runs on the lines of ‘ Who stole the cookie ’ . A person is chosen as ‘ Herman the German ’ ( HTG ) and he has to get the game running . The other members sit in a random manner and are given names , better if they are confusing names like China Port No. 1 , Rum Master Blaster etc . The game starts with HTG saying – “ HTG dropped a missile on China Port No. 1 , sir ” and China Port No. 1 has to reply with – “ It wasn’t me , sir . ” Then HTG replies – “ Who then , sir ” and it goes on . The sentence has to end with ‘ sir ’ and if it doesn’t , then the player has to down a beer . Similarly , if at any point the players fumble , they have to do the same . The tension makes the players forget things and there’s a whole lot of beer flowing as a result .

1.Which two games have something to do with running ?

A. Beer Boot Pass and Beer Crate-Running

B. Flunkyball and Drinking Relay

C. Beer Crate-Running and Flunkyball

D. Drinking Relay and Herman the German

2. The loser will have to buy beers for others in the game __________ .

A. Beer Boot Pass　　　　　　　　　　 B. Beer Crate-Running

C. Flunkyball　　　　　　　　　　　　 D. Drinking Relay

3.A person with a good memory may have a advantage in playing __________ .

A. Beer Boot Pass　　 B. Flunkyball

C. Drinking Relay　 　 D. Herman the German

4.Which of the following statements is listed as a rule of the games ?

A. Every person has to sip the beer when playing Beer Boot Pass .

B. The person who replies to HTG with “ sir ” at the end will be punished .

C. The team can start drinking their beers as soon as they throw the ball in Flunkyball

D. The team members have to drink their beers in turn when playing Drinking Relay .

高三英语阅读理解中等难度题查看答案及解析

Here are some traditional German beer games.

Beer Boot Pass

A very, very popular game played in Germany is the beer boot pass ( Bier Boot ), which has gained popularity all over the world. The game is usually played to pin the next round of beer on a person. In this, a full glass of beer is passed around in the group—there are some rules for this—it has to be tipped every time before it is passed and not a drop of beer must be spilled. The second-to-last person who finishes the beer must pay for the next round. The game then becomes all about judgment because either you drink the entire beer or have a sip and pass it on. You never know who the second to last person will be , so the uncertainty and excitement makes the game a favorite.

Beer Crate-Running

This is a traditional game that is extremely popular in Germany, Switzerland, and Austria, more popularly referred to as Kastenlauf. The game is similar to running a race, where a route is marked, ranging from anywhere between 5-12 km. Each participant brings a crate of beer ( the size and quantity will be specified ). The first person who successfully finishes the entire crate of beer before getting to the finish line wins.

Flunkyball

This outdoor game is played with one team being matched against another, with equal numbers in both. The teams stand on opposite sides of the ground in a line, with their beers lined before them. An empty bottle or a tin can is placed in the center and another object ( used as an aim ) is brought in, something like a tennis ball. The first team ( A ) hits the ball onto the target to tumble（打翻）it. Once the bottle has tumbled, team A will start drinking their beers. Meanwhile, team B must run to the center, place the bottle upright, find the ball, and cross back into the line before yelling‘Stop’ . Team A then stops drinking and team B starts to throw the ball at the bottle and carrying forward the game. The game continues till one team has finished all their beer and they are declared winners .

Drinking Relay

Divide the group of people into two teams and get them to stand in a line with beer placed in front of each member . At the blow of the whistle, the first person lifts the glass and starts drinking the beer. After he is done, he has to turn the glass over to show that there is no more beer in the glass. Then , the next person starts drinking and so on. The next in line can only drink when the first person has emptied his glass. The team whose last member empties the glass ahead of others wins.

Herman the German

Even though this game seems simple, it is a lot of fun. It runs on the lines of ‘Who stole the cookie’. A person is chosen as‘Herman the German’ ( HTG ) and he has to get the game running. The other members sit in a random manner and are given names, better if they are confusing names like China Port No.1, Rum Master Blaster etc. The game starts with HTG saying – “HTG dropped a missile on China Port No.1, sir ” and China Port No. 1 has to reply with – “It wasn’t me, sir.” Then HTG replies – “Who then, sir” and it goes on. The sentence has to end with ‘sir’ and if it doesn’t, then the player has to down a beer. Similarly, if at any point the players fumble, they have to do the same. The tension makes the players forget things and there’s a whole lot of beer flowing as a result.

1.Which two games have something to do with running ?

A. Beer Boot Pass and Beer Crate-Running　　

B. Flunkyball and Drinking Relay

C. Beer Crate-Running and Flunkyball　　

D. Drinking Relay and Herman the German

2.The loser will have to buy beers for others in the game __________ .

A. Beer Boot Pass

B. Beer Crate-Running

C. Flunkyball

D. Drinking Relay

3.A person with a good memory may have an advantage in playing __________ .

A. Beer Boot Pass　

B. Flunkyball　　　　　

C. Drinking Relay

D. Herman the German

4.Which of the following statements is listed as a rule of the games ?

A. Every person has to sip the beer when playing Beer Boot Pass.

B. The person who replies to HTG with “sir”at the end will be punished.

C. The team can start drinking their beers as soon as they throw the ball in Flunkyball.

D. The team members have to drink their beers in turn when playing Drinking Relay.

高三英语阅读理解中等难度题查看答案及解析

阅读理解。

Here are some traditional German beer games .

Beer Boot Pass

A very , very popular game played in Germany is the beer boot pass ( Bier Boot ) , which has gained popularity all over the world . The game is usually played to pin the next round of beer on a person . In this , a full glass of beer is passed around in the group—there are some rules for this—it has to be tipped every time before it is passed and not a drop of beer must be spilled . The second-to-last person who finishes the beer must pay for the next round . The game then becomes all about judgment because either you drink the entire beer or have a sip and pass it on . You never know who the second to last person will be , so the uncertainty and excitement makes the game a favorite .

Beer Crate-Running

This is a traditional game that is extremely popular in Germany , Switzerland , and Austria , more popularly referred to as Kastenlauf . The game is similar to running a race , where a route is marked , ranging from anywhere between 5-12 km . Each participant brings a crate of beer ( the size and quantity will be specified ) . The first person who success fully finishes the entire crate of beer before getting to the finish line wins .

Flunkyball

This outdoor game is played with one team being matched against another , with equal numbers in both . The teams stand on opposite sides of the ground in a line , with their beers lined before them . An empty bottle or a tin can is placed in the center and another object ( used as an aim ) is brought in , something like a tennis ball . The first team ( A ) hits the ball onto the target to tumble（打翻）it . Once the bottle has tumbled , team A will start drinking their beers . Meanwhile , team B must run to the center , place the bottle upright , find the ball , and cross back into the line before yelling ‘ Stop ’ . Team A then stops drinking and team B starts to throw the ball at the bottle and carrying forward the game . The game continues till one team has finished all their beer and they are declared winners .

Drinking Relay

Divide the group of people into two teams and get them to stand in a line with beer placed in front of each member . At the blow of the whistle , the first person lifts the glass and starts drinking the beer . After he is done , he has to turn the glass over to show that there is no more beer in the glass . Then , the next person starts drinking and so on . The next in line can only drink when the first person has emptied his glass . The team whose last member empties the glass ahead of others wins .

Herman the German

Even though this game seems simple , it is a lot of fun . It runs on the lines of ‘ Who stole the cookie ’ . A person is chosen as ‘ Herman the German ’ ( HTG ) and he has to get the game running . The other members sit in a random manner and are given names , better if they are confusing names like China Port No. 1 , Rum Master Blaster etc . The game starts with HTG saying – “ HTG dropped a missile on China Port No. 1 , sir ” and China Port No. 1 has to reply with – “ It wasn’t me , sir . ” Then HTG replies – “ Who then , sir ” and it goes on . The sentence has to end with ‘ sir ’ and if it doesn’t , then the player has to down a beer . Similarly , if at any point the players fumble , they have to do the same . The tension makes the players forget things and there’s a whole lot of beer flowing as a result .

1.Which two games have something to do with running ?

A. Beer Boot Pass and Beer Crate-Running

B. Flunkyball and Drinking Relay

C. Beer Crate-Running and Flunkyball

D. Drinking Relay and Herman the German

2.The loser will have to buy beers for others in the game __________ .

A. Beer Boot Pass　　　　　　　 B. Beer Crate-Running

C. Flunkyball　　　　　　　　　　 D. Drinking Relay

3.A person with a good memory may have a advantage in playing __________ .

A. Beer Boot Pass　　 　　　　 B. Flunkyball

C. Drinking Relay　　　　　　 D. Herman the German

4. Which of the following statements is listed as a rule of the games ?

A. Every person has to sip the beer when playing Beer Boot Pass .

B. The person who replies to HTG with “ sir ” at the end will be punished .

C. The team can start drinking their beers as soon as they throw the ball in Flunkyball

D. The team members have to drink their beers in turn when playing Drinking Relay .

高三英语阅读理解困难题查看答案及解析

Traditionally, the more people in a city, the fewer trees there are. To create space for houses, offices and other buildings, nature takes second place. But, if the architect Stefano Boeri has anything to do with it, this will soon be changing.

Boeri has designed a forest city, to be created in the north of Liuzhou in　 Guangxi region in southern China. This mountainous area was chosen to be “a city where living nature is totally intertwined with architecture.” According to Boeri, instead of completely getting rid of the trees to build houses, the city’s design considers the surrounding greenery. Homes and commercial buildings will be covered with trees, with gardens on the balconies (阳台) of every floor, and rooftops that are home to miniature forests.

“I have been working on the idea of urban forestation for years,” says Boeri. “In those areas of the planet where it is still necessary to build new cities, we are planning real forest cities for a maximum of 150,000 citizens.”

The Liuzhou Forest City will be connected to central Liuzhou via a railway line and a road. It will be home to 30,000 people, and include commercial and recreational spaces, two schools and a hospital. On top of this, the vegetation will absorb carbon dioxide and pollutants, as well as releasing oxygen into the atmosphere.

Development is well underway for the forest city. “Our masterpiece for a forest city in Liuzhou has been approved by the local government,” says Boeri. Now, the government is starting the process of selling land to interested developers. “The current phase is still ongoing for land selling,” says Boeri. Building is expected to begin in 2020. At the same time, the firm has copied the concept in Lishui, a city in the southeast of China. The masterpiece has also been given the thumbs-up by local governments here, and the developer is collecting funds to launch the project.

If the Chinese cities prove successful, Boeri hopes that the idea will take hold across the world. “We are developing the same concept in other places with different climate conditions, such as Mexico and north Africa,” he says.

And there is science behind the idea of planting trees to halt climate change. A study earlier this year by scientists at ETH Zurich found that planting at least a trillion trees around the world could lock up 205 billion tonnes of carbon, once the trees are mature, helping to offset the effects of releasing greenhouse gases into the atmosphere.

1.According to the passage, Boeri holds the belief that ______.

A.a city can be built in harmony with nature

B.climate change results from the city development

C.the building of a city may cost the damage of nature

D.we should stop building new cities to protect nature

2.What can we infer from the cities designed by Boeri?

A.Houses would be built in a huge forest.

B.Citizens will live in inconvenient areas.

C.Cities can be transformed to forest cities.

D.The idea will be tried out soon worldwide.

3.What is the attitude of the Lishui government on Boeri’s concept?

A.Supportive. B.Neutral.

C.Unclear. D.Critical.

4.Which of the following would be the best title for the passage？

A.Where the Problem of Pollution Is Rooted

B.How Forest Cities Are Affecting the World

C.Can Forest Cities Help to Clean Up Pollution

D.Who Is to Blame for the Problem of Pollution

高三英语阅读理解中等难度题查看答案及解析

In Colombia , there are some unwritten rules that people are used to , These rules are not officially established , but people do respect them . For example , on a bus , a person keeps a distance from another person , and people don’t like to touch each other . Many people come to work late because they prefer to wait for another bus if the first one is too crowded . They don’t want to have to stand too close to another person , or maybe they are afraid of starting a conversation .

A friend of mine in Colombia once said his mom got angry because he came home late , so he asked her , “ Mom , what do you think of most people arriving at their jobs so late ? ” That gave her the answer to her question since everyone knows no one wants to get on a bus that is too crowded . His mother realized at that moment that customs have a big influence on a person’s life .

Sometimes , people don’t like to make any kind of conversation or make eye contact with others . For example , when they are in line at a bank , they prefer to look up or down rather than look at other people .

Moreover , people usually look down when they are in an elevator . Not only on a bus , in line at a bank , and in an elevator do people usually avoid talking to other people , but also in the streets when they are walking , they prefer to look down and to avoid contact with others .

1.Why do many people get to work late in Colombia ?

A. They always think the next bus will be better .

B. They don’t want to get on crowded buses .

C. It’s an official rule in Colombia .

D. They get into conversations and miss their buses .

2.From the text we learn that __________ .

A. customs influence people’s lives

B. a mother always understands her son

C. people respect each other in Colombia

D. people like to talk in elevators in Colombia

3.When people in Colombia are in line at banks , they __________ .

A. make eye contact          B. look at other people

C. make conversation         D. look up or down

4.What would be the best title for the text ?

A. What People Do in Different Situations   B. Avoid Getting on a Crowded Bus

C. Special Customs in Colombia             D. Obeying Unwritten Rules

高三英语阅读理解中等难度题查看答案及解析

In Colombia, there are some unwritten rules that people are used to. These rules are not officially established, but people do respect them. For example, on a bus, a person keeps a distance from another person, and people don’t like to touch each other. Many people come to work late because they prefer to wait for another bus if the first one is too crowded. They don’t want to have to stand too close to another person, or maybe they are afraid of starting a conversation.

A friend of mine in Colombia once said his mom got angry because he came home late, so he asked her, “Mom, what do you think of most people arriving at their jobs so late?” That gave her the answer to her question since everyone knows no one wants to get on a bus that is too crowded. His mother realized at that moment that customs have a big influence on a person’s life.

Sometimes, people don’t like to make any kind of conversation or make eye contact(接触) with others. For example, when they are in line at a bank, they prefer to look up or down rather than look at other people.

Moreover, people usually look down when they are in an elevator. Not only on a bus, in line at a bank, and in an elevator do people usually avoid talking to other people, but also in the streets when they are walking, they prefer to look down and to avoid contact with others.

1. Why do many people get to work late in Colombia?

A. They always think the next bus will be better.

B. They don’t want to get on crowded buses.

C. It’s an official rule in Colombia.

D. They get into conversations and miss their buses.

2. From the text we learn that ________.

A. customs influence people’s lives        B. a mother always understands her son

C. people respect each other in Colombia    D. people like to talk in elevators in Colombia

3.When people in Colombia are in line at banks, they ________.

A. make eye contact                 B. look at other people

C. make conversation                D. look up or down

4. What would be the best title for the text?

A. What People Do in Different Situations   B. Avoid Getting on a Crowded Bus

C. Special Customs in Colombia          D. Obeying Unwritten Rules

高三英语阅读理解中等难度题查看答案及解析

There are many people in the office, some ______ are English teachers.

A. of them　　 B. from which

C. of who　　 D. of whom

高三英语单项填空中等难度题查看答案及解析

Across the planet there are millions of people who engage in some type of meditation, the practice of concentrating and clearing the mind to bring the body into a state of peace, at least a semi-regular basis. For some, particularly among practitioners of Eastern religions such as Buddhism and Hinduism, this is part and parcel of their religious practice.

For others, particularly in Western cultures, meditation tends to be a response to stress. With the world economy approaching meltdown and people worried about their job or their ability to keep their home, it’s a way for people to attain a state of peace of mind and well-being. For those interested in taking up the practice, instruction in meditation for beginners can be found in literally thousands of sources.

One of the most popular styles of mediation in the West, with classes offered in most major cities, is called Transcendental Meditation. TM, as it is known among its practitioners, first came to worldwide attention when the Beatles began practicing it in 1967. For direct, guided, personal instruction in meditation for the beginner, TM may be the hallmark.

Part of the confusion about how to practice meditation effectively is due to the fact that there are literally hundreds of techniques championed by various groups and individuals. As a general principle, it might be said that all meditation techniques seek to have the practitioner attain a state of consciousness that is different to our ordinary state of awareness. They attempt to train people to clear their minds and achieve a sense of inner peace. It sounds simple enough, but of the huge number of people experiment with meditation, very few are able to maintain its practice over the long haul. In most cases, this is due to frustration over the inability to experience any dramatic, instantly recognizable effects.

This is quite a sad state of affairs, that so few these days are willing or equipped to persist in something that doesn’t provide immediate life-changing results. It reflects a culture in which demands for discipline and sustained effort are considered unnecessary or even unfair. It is no surprise therefore that many people abandon their efforts at meditation before they have a chance to bear fruit.

But for anyone who does decide to take up this worthwhile practice, please remember: You must clear your mind, relax and “take it as it comes”. Maintain the practice with a sense of discipline and devotion, and eventually benefits of inner peace and calm will be yours.

1.The underlined part “part and parcel of” in paragraph 1 is nearest in meaning to ________.

A. closely associated with B. very different to

C. usually sent from　　　　 　 D. an important element of

2.The goal of meditation is ________.

A. to clear the mind

B. to practice a religion

C. to develop a technique

D. to carry out an experiment

3.What can we infer about meditation from the passage?

A. It has two main types.

B. It is practiced by many famous artists.

C. Its benefits are not immediately obvious.

D. Most people find it a very good way to relax.

4.According to the writer, what has attracted many Western people to meditation practices in recent years?

A. Their improved understanding of foreign culture.

B. The need to fill in their growing free time.

C. Increasing employment instability.

D. Migration from countries in which meditation is traditional.

5.Who is the probable audience for this article?

A. Experienced meditation practitioners.

B. People interested in starting to learn meditation.

C. Buddhists and Hindus.

D. People who are very religious.

高三英语阅读理解中等难度题查看答案及解析