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Alan Chang was a handsome young man with good manners. One morning he was walking along a street on his way to an appointment. He did not want to be early or late. He had forgotten to put on his watch so he went up to a man who was waiting for a taxi. "Excuse me, sir," he said, very politely, "but could you tell me the time?" The man, who was very well - dressed and looked quite rich, said nothing. He did not even look at Alan. Alan spoke to him again. "Excuse me, sir," he said, "but could you please tell me what time it is?" This time the man looked at him, but he did not speak and looked quickly away. Alan thought to himself: well, he can hear me; he must be just rude. So Alan asked again, "Why wouldn't you tell me the time, sir?" The man turned towards him and said, "Put yourself in my shoes. I am standing here waiting for a taxi. You come up to me and ask me for the time. If I tell it to you, you will thank me. I will say 'That's all right.' You may then say 'It's a beautiful day,' to which I may reply 'Yes, I like these sunny winter days.' Before we know what is happening we have a friendly conversation. You are a pleasant, polite young man, so when my taxi comes, I offer you a ride. You accept. We talk. I like you. You like me. I invite you to my home. You meet my daughter. She is a very pretty girl. You are a good - looking man. You like each other. Soon you fall in love. You want to marry. Now do you understand my problem?" Alan shook his head. "No, sir, I'm sorry, I don't. Everything you have said seems very natural to me." "Exactly," the man said, "and I do not want my daughter to marry a man who is too poor to buy a watch." And with these words he hurried away. Why did Alan ask the man what time it was?
A class with hundreds or even thousands of students might sound like a teacher's worst nightmare. But a big idea in higher education these days is Massive Open Online Courses, or MOOCS. Some universities offer free, non-credit MOOCS available to anyone in the world. Others charge for courses and provide credits. The idea is still developing. The Massachusetts Institute of Technology started its first MOOC in 2012. The school plans to offer many free, non-credit courses through a project called MITX. Many Chinese universities are beginning to offer free MOOCS now, too. Nowadays, MOOCS almost cover every topic, like computer science, technology, mechanics, languages, etc. Generally speaking, there are no formal education requirements for these free online courses. Students watch short videos. Then, they take informal, ungraded quizzes after the videos each week for certain weeks. Quizzes are part of the lecture program to keep students engaged and them thinking, for students to be able to check that they understood what was covered. They can repeatedly watch the videos and take the quizzes whenever they want. Students receive homework. They can join online groups to exchange questions and answer questions about the courses. The teachers hold virtual office hours to answer questions that the students have posted. They also present their own questions and observations. Some supporters claimed that there are things that we can do better in the online format. We can certainly deliver high-quality education to many students at a much lower cost. Which of the following sentence is true?