input question: Write a multi-choice question for the following article, with the given choices and answer: Article: In America: There are many more cars than in China. Maybe the number of cars in California is the same as the number in China. But there are fewer traffic jams and accidents in America than in China. We hardly see traffic police in the street, but all cars obey traffic rules strictly , and people hardly find that a car does not obey traffic rules in the street. About America traffic rules, there are many better terms , such as: 1. Stop line: There are stop line in all crossing without traffic lights(some have two stop lines and others have four stop lines); all cars must stop while meeting the stop lines. 2.Traffic lights: There are traffic lights in the crossing of the road .Cars may almost turn every direction. the traffic lights can give signals step by step including u-turn . There is a kind of middle lane of turning left. When a car wants to turn left in the road, he may enter into the middle lane of turning left and give a signal of turning left. When he thinks being safe he may turn left. 3. Specific item: Such as parking, there are three kinds of lines (its color are white, blue or red) in the roadside. Every line may park different kinds of cars. There are streets in some residential areas, and no car can park at any time or any period time. 4. About the priority of passengers and cars: At any case, passengers have the priority to cars. But only after passengers have passed the road and gotten the top of sidestep, cars may go ahead. In general, traffic rules of America are very specific, convenient and safe. Options: A the priority of passengers and cars B the traffic lights C the stop line D American traffic rules Answer: D American traffic rules Question:???
output answer: This passage mainly talks about _

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: Obama has made history by becoming the first African-American in American history. Obama was born in Hawaii on August 4, 1961. His parents didn't live together when he was two years old and later divorced. Obama grew up with his mother in Hawaii, and for a few years in Indonesia. Later, he moved to New York, where he graduated from Columbia University in 1983. Obama met his wife, Robinson, in June, 1989 and married her on October 3rd, 1992. The couple's first daughter was born in 1998, followed by a second daughter in 2001. Obama _ in January 20, 2009. However, just when he became the president, he had to face many serious challenges ---- two foreign wars, the climate change and what he had described as "the worst financial crisis in a century". But Obama said that he himself had been ready to face these challenges. Obama's success is a true milestone. It speaks to the fact that in America you really do get a chance to do anything, if you have the talent and abilities and you work hard enough. Options: A the climate change B the financial crisis C the population problem D foreign wars Answer: C the population problem Question:???
output answer: According to the passage, Obama had to face the following challenges except for _ .

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: "How are you?" is a nice question.It's a friendly way that people in the United States greet each other,but "How are you?" is also a very unusual question.It's a question that often doesn't have an answer.The person who asks "How are you?" hopes to hear the answer "Fine", even if the Derson's friend isn't fine.The reason is that "How are you?" isn't really a question and "Fine",isn't really an answer.They are simply other ways of saying "Hello!" or "Hi!". Sometimes,people also don't say exactly what they mean.For example,when someone asks "Do you agree?".the other person might be thinking,"No,I disagree.I think you're wrong."But it isn't very polite to disagree so strongly,so the other person might say "I'm not so sure."It's a nicer way to say that you don't agree with someone. People also don't say exactly what they are thinking when they finish talking with other people.For example,many talks over the phone finish when one person says "I have to go now."Often,the person who wants to hang up gives an excuse:"Someone's at the door.""Something is burning on the stove."The excuse might be real,or it might not.Perhaps the person who wants to hang up simply doesn't want to talk any more,but it isn't polite to say that.The excuse is more polite,and it doesn't hurt the other person. Whether they are greeting each other,talking about an idea,or finishing a talk,people often don't say exactly what they are thinking. It's an important way that people try to be nice to each other,and it's part of the game of language. Options: A giving an excuse B hurting someone's feelings C talking to a person at the door D going to another place Answer: A giving an excuse Question:???
output answer: When a person says "I have to go now.Someone's at the door.",the person may be _ .

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: Each nation has many good people who help to take care of others. For example, some high school and college students in the United States often spend many hours as volunteers in hospitals, orphanages or homes for the old. They read books to the people in these places, or they just visit them and play games with them or listen to their problems. Other volunteers go and work in the homes of people who are sick or old. They paint, clean up, or repair their houses, do their shopping or mow their lawns . For boys who no longer have fathers there is an organization called Big Brothers. College students and other men take these boys to baseball games or on fishing trips and help them to get to know things that boys usually learn from their fathers. Each city has a number of clubs where boys and girls can go to play games or learn crafts . Some of these clubs show movies or organize short trips to the mountains, beaches, museums or other places of interest. Most of these clubs use a lot of high school and college students as volunteers because they are young enough to remember the problems of younger boys and girls. Volunteers believe that some of the happiest people in the world are those who help to bring happiness to others. , Options: A It's the name of a club. B It's a home for children who have no brothers. C It's the name of a film. D It's an organization for boys who no longer have fathers. Answer: D It's an organization for boys who no longer have fathers. Question:???
output answer:
What is Big Brothers?