Dolphins live in a dark underwater world. It's often impossible to see each other or anything else around them, so sound plays an important role in their survival. To communicate with each other, dolphins produce all kinds of sounds. Only other dolphins understand what the sounds mean. Scientists haven't uncovered their secret communication, except for one kind of whistle. It might last less than a second, but this whistle is a big deal. Why? Because these whistles are actually names of dolphins - and every dolphin has one. Scientists call these sounds a "signature whistle." When other dolphins hear the whistle, they know which dolphin is calling. Dolphins often hunt by themselves but still need to stay connected to the group. Since they can't always see each other, dolphins use their signature whistles to check in with other dolphins hundreds of yards away. "In coastal areas, dolphins exchange whistles even when they're a third of a mile apart," says Greg Campbell, who studies animals. That means dolphins shout out to group members that might be nearly five football fields away. What's amazing is who names the baby dolphin. Not the mother. Not an auntie dolphin or another group member. Scientists believe the baby dolphin itself comes up with the signature whistle. Like human babies, a baby dolphin plays with sounds throughout its first year. While testing its sound skills, a baby dolphin is doing something amazing. It's creating or figuring out its signature whistle. How or why it chooses its signature whistle is not clear. Studies show that most of the time the signature whistle is nothing like its mother's or group members' whistles. When the baby dolphin is about a year old, its signature whistle is set. It repeats it often so the other dolphins learn to recognize it. Deciphering dolphin names is just the beginning of figuring out what dolphins communicate about. Do they chat about sharks? Discuss the tides? Maybe they even have a name for people. Someday scientists are to decipher the rest of dolphins'... Sound is important for dolphins because of _ . A) their poor sense of direction B) their living environment C) their strong enemies D) their big groups
B
(Question)
What does it mean to day that we live in world of persuasion? It means that we live among competing interests. Your roommate's need to study for an exam take priority over pizza. Your instructor may have good reasons not to change your grade. And the object of your romantic interest may have other choices. In such a world, persuasion is the art of getting others to give fair and favorable consideration to our points of view. When we persuade, we want to influence what others believe and how they behave. We may not always prevail --other points of view may be more persuasive, depending on the listener, the situation, and the merits of the case. But when we practice the art of persuasion, we try to ensure that our position receives the attention it deserves. Some people, however, object to the very idea of persuasion. They may regard it as an unwelcome approach to their lives or as a control. In contrast, we believe that persuasion is inevitable--to live is to persuade. Persuasion may be moral or immoral, selfless or selfish, inspiring or discouraging. Persuaders may enlighten our minds or make us hurt. Moral persuasion, however, calls on sound reasoning and is sensitive to the feelings and needs of listeners. Such persuasion can help us apply the wisdom of the past to the decisions we now must make. Therefore, an essential part of education is learning to resist the one kind of persuasion and to encourage and practice the other. Beyond its personal importance to us, persuasion is a need to society. The right to persuade and be persuaded is the basic principle of the American political system. What's the author's attitude towards persuasion? A) Critical. B) Uninterested. C) Supportive. D) Neutral.
(Answer)
C
Ques: Mr. Hadley was my 6th grade teacher. At that time I was a short girl weighing 70 kilograms. Boys always laughed at me because of it. So I became an extremely shy young lady. One day Mr. Hadley told us that we would be required to come to the front of the class and read the reports that we had completed. When my turn came, I refused to stand in front of all those students and open up to their tricks. Mr. Hadley handed me my report and asked me to read it. I gave it back to him. He walked to the front and said,"Martha has a very good report here and I think everyone needs to hear her read it. If you make strange noises or make fun of her in any way, I will let you fail right here and now. OK?" Mr. Hadley walked back to me and handed me the paper again, asking me to go to the front of the class. I walked there on legs that were shaking and I felt a rabbit in my chest. Everyone was all quiet, including those boys. I stood there trying to be calm. Mr. Hadley walked over to me and put his arm around me,"You can do it. I have confidence in you!" His words helped me calm down. I read the report and instead of the kids laughing at me and making fun of me, they all stood up and clapped their hands. From that day on the kids never made fun of me any more and some actually made friends with me. I continued to be quite shy all through school but I knew if I had to stand up in front of the class, I could do it. Martha felt extremely shy because of her_. A) study B) age C) appearance D) beauty
Ans: C
He seemed to appear from nowhere and became the hottest sports star in NBA, the United States, and in China. "Linsanity," "Lincredible," "Linderella" screamed the headlines around the world and his popularity increased worldwide. He is the star of the moment having scored 89, 109 and 136 points in his first three, four and five starts in the big league, eclipsing former NBA MVPs Allen Iverson, Shaquille O'Neal and Michael Jordan. He also made the cover of Time Magazine, something Kobe Bryant has never achieved. And it is not just his sporting achievements that are causing him a hit. His No 17 jersey is flying off the shelves in New York and online around the world. Some US media have even begun matchmaking possible girlfriends for the golden boy, with Emma Stone, Vanessa Hudgens and so on. Is Linsanity really that big? Despite all the hype and glory, he is known as a modest and sometimes shy guy. Jeremy Lin is the NBA's first American-born player of Chinese descent. Who is Jeremy Lin? A) The hottest sports star only in NBA B) A Chinese basketball player in NBA C) An American of Chinese descent D) A golden boy from an important family
C