Read the article and select the best answer. Article: Miss. Green taught Physics in a London school. Last month she explained to one of her classes about sound, and she decided to test them to see how well she did in her work. She said to them, "Now, I have a sister in Washington. If I was calling her on the telephone, and at the same time you were 20 metres away, and listened to me from the other side of the street, who would hear what I said earlier, my sister or you? And why?" The cleverest boy answered at once, "Your sister, Miss. Green, because electricity travels faster than sound waves." "That's very good." Miss. Green said. But then one of the girls put up her hand. Miss. Green said, "Yes, Betty?""I don't think so," Betty said. "Your sister would hear you earlier because when it's eleven o'clock here, it's six o'clock in Washington." Question: Miss. Green was teaching the class _ . Options: A: about time B: about sound C: about electricity D: about telephone
B

Read the article and select the best answer. Article: Do you ever find yourself getting really unhappy for almost no reason? Or suddenly feeling down without knowing why? But why is the feeling so common among teens? Maybe you're starting a new school and not able to see old friends. Getting good grades or wanting to be better in sports or other activities can be a concern for many teens. Being accepted by friends is important. Teens also may notice, for the first time, a sense of distance from parents and family. You may feel you want to be on your own and make your own decisions, but it can also seem a bit lonely at times. Another important cause for mood changes is biology. When puberty begins, the body starts producing hormones . These hormones cause physical changes in the body. But at the same time, they also seem to cause mood changes. Here are some things you can do that might make those bad moods a bit easier to deal with. * Remember you're not alone. Although not every teen experiences mood changes to the same degree, they are common. * Talk to people you trust, Friends can help each other by realizing that they're not alone in their feelings. Talking to parents is important, too. Parents can share their own experiences dealing with bad moods. Teachers are often good resources and a doctor can help to answer questions about development. * Get enough sleep, Though it can be hard to find enough time, getting enough rest is very important. Being tired can lead to more sadness. * Create. Taking part in some kinds of activities, like building something out of wood, or starting an art or music piece. Question: The title of the passage is _ . Options: A: teenagers' ideas B: teenagers' mood C: teenagers' puberty D: teenagers' problems
B

Q: Read the article and select the best answer. Article: When Brody Roybal was a baby, he didn't have legs. But that didn't make him feel sad or stop him from trying sports. He tried different kinds of sports. When he tried sled hockey at the age of 7, he loved it. " That was it," says Roybal. He is now 15 and a student in a high school in Chicago. " It's all I wanted to do." Roybal joined a sled hockey team. At the age of 12, he started playing in an adult team. It was much harder for him, but he still worked hard. Now Roybal is a player of the sled hockey team in his country. O' Connor, manager of the team, says Roybal is very good. " Everybody dreams of going to the Olympic Games and winning the game," O' Connor says. " That's something that I couldn't do, but Roybal can. He is lucky and he can go to the next Olympics." It's true that when God closes a door, he opens a window for you. Question: What's the problem of Roybal? Options: A: He has no legs. B: He has no arms. C: He can't see. D: He hurt his left leg.
A: A

Question: Read the article and select the best answer. Article: Teachers say the digital age has had a good and a not-so-good influence on the American teenagers. More than 2,000 high school teachers took an online survey. 75 percent of the teachers said the Internet and digital search tools have had a "mostly good" use for their students' research habits and skills, But 87 percent agreed that these technologies "make the students not have enough attention." And 64 percent said the technologies "do little to help them in courses." Judy Buchanan is a director of the National Writing Project. Ms. Buchanan says digital research tools are helping students learn more, and learn faster. Teachers really like these tools, because they are ways to make some of learning exciting. Young people enjoy using these tools. And the goal is to help them become creative students of meaningful work, and not just that kind of copyist. But one problem the survey found is that many students don't have a good understanding of how to use the digital knowledge well. In other words, they trust too much of the information. Judy Buchanan says these students have not developed the skills they need to tell whether the online information is good or bad. Another problem the survey found is something that might not seem like a problem, at all, being-able to quickly find information online. Teachers say the ability of their students to work hard to find answers is becoming weaker. They say students depend too much on search engines and do not make enough use, of printed books or research, librarians. Besides, many teachers are also worried about the problem that the Internet makes it easy for students to copy work done by others, instead of using their own abilities. Question: How many problems are mentioned in the passage'? Options: A: One B: Two. C: Three. D: Four.
Answer: C

Q: Read the article and select the best answer. Article: If you need to call your parents but your phone is not with you, can you remember their numbers? To remember 11 numbers is not difficult. However, because of the smartphone, many of us are losing this ability. What's more, smartphones weaken our skills at giving directions, as well as killing face-to-face communications. Even when friends are having a meal together, it's common for most to check their phones. According to a report by Kleiner Perkins Caufield Byers, an American company, Chinese people spend about 170 minutes on their smartphones daily. Many students are _ to using smartphones. It does no good to their study. Research by Japan's Education Ministry showed children who spend more than four hours a day on their phones perform much worse in school test than those who play with their phones for 30 minutes. It's true that the smartphone has made our lives easier. But many also think they spend too much time on it, and this is bad for their study or work. People are trying to change that. A new app called Forest was introduced this month. It lets users plant a seed that grows into a tree over the next 30 minutes. During the half hour, users cannot use their phones, or the tree will die. A restaurant in Los Angeles, US, gives people a 5% discount if they don't check their phones during a meal. Owner Mark Gold said he hopes it gives people a way to enjoy their meal and actually talk with friends and family in person. Question: By giving people a 5% discount, Owner Mark Gold wants his customers to _ . Options: A: enjoy a cheaper meal B: say no to smartphones C: check phones after the meal D: improve face-to-face communication
A: D