input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: Chinese player Li Na, a two-time Grand Slam champion, announced her retirement on Sept 21 because of long-term knee injuries. Although it was a hard decision, Li said she had no regrets . "I don't feel sorry about retiring, because I've tried my best," said the 32-year-old. Becoming professional at the age of 17, Li has set many milestones for Chinese tennis. She was the first Chinese player to win a WTA title and the first to break into the top 20. Li won the 2011 French Open title and became the first Asian player to ever win a Slam. By winning this year's Australian Open, she became the first Asian player with two Slams. As excellent as her tennis abilities are, Li's sense of humor is _ too. She often jokes about life with her husband in interviews, changing them into funny comedy shows. Her speech at the Australia Open in January is just the best example. During her 15-year professional career, Li has helped the improvement of tennis in China. Earlier this month, Chinese another player Peng Shuai, 28, made the semifinals of the US Open. Last week, a new tennis match started in Li's hometown of Wuhan. "I've seen changes happening in front of my eyes, young girls picking up tennis rackets, setting goals ... and believing in themselves," Li said in an online post. Li is more than a sports superstar. As WTA chief executive Stacey Allaster said, she is "a pioneer who opened doors to tennis for hundreds of millions of people throughout China and Asia." Li said she planned to take care of my family and then to open a tennis school in China after her retirement. Her official retirement ceremony will be on Sept 30. Options: A Because of the increasing age. B Because of the arm injuries. C Because of the knee injuries. D Because of the bad performances Answer: C Because of the knee injuries. Question:
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output: Why did Li Na decide to give up her tennis career?

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: Some of the greatest problems we face today are the destruction of our environment. Brown clouds, polluted water,endangered wild animals.... these problems seem so huge. So my family does what we can. We take cloth bags to stores instead of using plastic bags. We walk where we don't have to drive... But does it do any good? When I am the only one in line at the market with cloth bags, am I doing any good? Does my walking to stores make any real difference to the world? I recently learned something about flamingos which like to get together in groups of a thousand or more. Every year, when the time comes for migration ,a few of them first take off from the lake. But none of the others seem to notice. So the small group returns. However, the next day they try again. This time a few more fly along with them, but most of them still pay no attention, so they return again. They try for several times. Every time a few more birds join in but, since thousands of the others still take no notice, the great migration plan is once more stopped. Then one day something changes. The same small group of birds once again starts flying and a small number more join in just as before. then more. Finally, they all take flight and the migration really begins. What a _ sight it must be -- thousands of flamingos taking off into the sky at once ! A few can make a difference. Even if you're the one to take the first step, and continue trying, others will someday take notice and together we will solve even our greatest problems. Options: A To show that the writer loves to see the migration of flamingos. B To tell readers to continue trying and it can make a difference. C To introduce a special kind of flamingo to readers. D To show that there're many problems in the world. Answer: B To tell readers to continue trying and it can make a difference. Question:
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output: What's the writer's purpose of writing this article?

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: Bob is a middle school student. He is 13years old. He lives in Shanghai with his parents and his twin brother, Jack. They are in the same( ) school, but in different classes. Bob is good at Maths, but not good at English. He thinks it's a little difficult for him. But he plans to spend more time on it. Every morning, Bob gets up early. He usually reads English for half an hour. And then he has breakfast with his family. He usually has two eggs and a glass of milk. After breakfast, he walks to school with his brother. It takes them about twenty minutes to get to school. They get to school at about 7:40. Bob begins his classes at 8:00. After four lessons in the morning, he has a hamburger, some fish and vegetables for lunch at school. Then he has three classes in the afternoon. His last class is over at 4:50p.m. After school, he usually plays football or basketball from 5:00 p. m. to 6:00 p.m. He says it is good for his health to play sports every day. He gets home at 6:20 p.m. He usually eats some rice and vegetables for dinner. Sometimes, he eats some noodles. After dinner, he does his homework from 7:30to 9:30. Then he listens to music or reads books for a while( ). He doesn't watch TV or play computer games on weekdays. He goes to bed at 10:30 p.m. His friends say his lifestyle is very healthy. Do you think so? Options: A English B Geography C Maths D History Answer: A English Question:
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output: Bob thinks _ is a little difficult for him.

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: The Internet is becoming important in our life. How much do you know about it? The following questions and their answers will help you to know more about the Internet. What is the Internet? The Internet is a large, world-wide collection of computer networks . A network is a small group of computers put together. The Internet is many different kinds of networks from all over the world. These networks are called the Internet. If you have learned to use the Internet, you can have a lot of interest on the World Wide Web . What is the World Wide Web? The World Wide Web has been the most popular development of the Internet. It is like a big electronic book with millions of pages. These pages are called homepages. You can find information about almost anything in the world on these pages. For example, you can use the Internet instead of a library to find information for your homework. You can also find information about your favourite sport or film star, talk to your friends or even do some shopping on the pages. Most pages have words, pictures and even sound or music. What is e-mail? Electronic mail (e-mail) is a way of sending messages to other people. It's much quicker and cheaper than sending a letter. If you want to use e-mail, you must have an e-mail address. This address must have letters and dots and an @ (means "at"). For example: Lily @ Yahoo.com. Write a message, type a person's e-mail address, and then send the message across the Internet. People don't need to use stamps, envelopes or go to the post office because of the invention of the Internet. Quick, easy and interesting -- that's the Internet. Options: A they don't have to pay any money B it's faster and cheaper C they don't need to have stamps, envelopes or addresses D it's interesting Answer: B it's faster and cheaper Question:
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output:
People like to use e-mail to send messages to their friends because _ .