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I'm taking a test and have to guess the right answer to the question after the article. Article: In the digital age, getting students into classrooms is an increasingly challenging mission for college and university teachers, not to mention retaining their attention. "It's much harder to teach the post-90s,,,said Chen Jixiu , a math professor at Fudan University. "They use smart-phones and tablets to search for information, even during class. They get knowledge from a variety of sources, and consider it 'a small cake ,to skip classes. " According to Chen, this situation has forced teachers to adopt "odd tricks" for attracting students to class. Here are some interesting ideas picked up by 21st Century. Food for Thought: Rather than providing only moral encouragement, teachers at Wuhan University are offering real-life related rewards to improve student attendance. Students sitting in the first row of the health psychology course taught by professor Lei Wuming are rewarded with snacks. "I've got 7,000 fans on my micro-blog ,and most of them are my students,"said Lei ,director of the university's Education Institution. "I do want to express my thanks to those coming to listen, and to make the class more lively. " Teacher vs Phone; In the broadcasting and hosting course of Hankou University, teacher Huang Huiqiong gives students permission to busy themselves with their cell phones during class. They keep their heads down until they hear something interesting. If not, they can sit through the entire class without being disturbed and even give the teacher advice following the class. "A teacher is not the boss and students have the right to make content suggestions,,,said Huang. Friendly Blogs: You might hesitate to participate in class discussions, but what if you could send a message instead of speaking out loud? In the computer science course at Changsha University of Science Technology (CUST),students can voice opinions via their cell phone. "I open a micro-blog webpage,and when students text a message to the account, it appears on the screen,,,said teacher Huang Qiang. Su Ying, 19,a sophomore at CUST,... Question: Huang Huiqiong allows her students to play with cell phones in class because Options: A: she doesn't like to disturb her students in class B: her students can hear something interesting C: she thinks students are the main role in class D: her students may feel much more relaxed
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C

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I'm taking a test and have to guess the right answer to the question after the article. Article: We can begin our discussion of "population as a global issue" with what most person mean when they discuss " the population problem": too many people on earth and a too rapid increase in the number added each year. The facts are not in dispute. It was quite right to employ a similar matter that linked demographic growth to " a long, thin power fuse that burns steadily from time to time until it finally reaches the limit, and explodes". To understand the current situation, which is characterized by rapid increases in population, it is necessary to understand the history of population trends. Rapid growth is a comparatively recent phenomenon. Looking back at the 8,000 years of demographic history. We find that population have been really stable or growing very slightly for most of human history. For most of our ancestors, life was hard, often nasty, and very short. For most of human history, it was seldom the case that one in ten persons would live past forty, where infancy and childhood were especially risky periods. Often, societies were in clear danger of extinction because death rates could exceed their birth rates. Thus, the population problem throughout most of history was how to prevent extinction of the human race. This pattern is important to know. Not only does it put the current problems of demographic growth into a historical perspective, but it suggests that the cause of rapid increase in population in recent years is not a sudden enthusiasm for more children, but an improvement in the conditions that traditionally have caused high rate of death. Demographic history can be divided into two major periods: a time of long, slow growth which extended from about 8000B.C. till approximately 1650 A.D. And a period of rapid growth since 1650. In the first period of some 9,600 years, the population increased form some 8 million to 500 million in 1650. Between 1650 and the present, the population has increased from 500 million to more than 4 billion. And it is estimated that by the year 2020 there will be 8... Question: It can be inferred from the example of a power fuse that _ . Options: A: too much population will one day lead to the doom of human beings B: the trend of population growth will keep unsteady until the destruction of Earth C: demographic growth will follow a certain pattern of ups and downs D: it is likely in the near future that population will reduce gradually
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A

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I'm taking a test and have to guess the right answer to the question after the article. Article: Mr. Knight was the manager of a hotel. One weekend all of the hotels in the city were full because there was a large meeting. On Friday, three men came into the hotel and asked for rooms. Mr. Knight said there were no rooms ready because of the meeting. The men were unhappy. Mr. Knight wanted to help them. He remembered that Room 418, a small room, was empty. He asked them if they could share a room. The three men said they would. Mr. Knight said the room would be thirty dollars; ten dollars for each person. Each man gave him the money and then went up to the room. Mr. Knight soon began to feel sorry. "Thirty dollars is a lot to ask as a price for that small room." he thought. He called his assistant over and said, "Here is five dollars. Take it to the men in Room 418. I asked too much for their room." The assistant took the money. While he was on the way there, he started to think, "How can three men divide five dollars? I'll give them each only one dollar and keep the two dollars for myself. The men will be happy to get something back. And Mr. Knight will never know." So the assistant returned one dollar to each man. Each man had at first paid ten dollars. After the assistant returned them one dollar each, each had actually(in fact) paid nine. There were three men. $9 3="$27." The assistant kept$2. $27+$2="$29." Where is the missing dollar? Question: At first _ . Options: A: $27 was paid by the three men B: $30 was paid by each of the three men C: $25 was paid by the three men D: $10 was paid by each of the three men
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D