TASK DEFINITION: In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.
PROBLEM: Article: Children's lives have changed greatly over the last 50 years.But do they have a happier childhood than you or I did? It's difficult to look back on one's own childhood without some element of nostalgia .I have four brothers and sisters, and my memories are all about being with them.Playing board games on the living room floor, or spending days in the street with the other neighborhood children, racing up and down on our bikes, or exploring the nearby woods.My parents scarcely appear in these memories, except as providers either of meals or of severe blame after some particularly risky adventure. These days, in the UK at least, the nature of childhood has changed dramatically.Firstly, families are smaller, and there are far more only children.It is common for both parents to work outside the home and there is the feeling that there just isn't time to bring up a large family, or that no one could possibly afford to have more than one child.As a result, today's boys and girls spend much of their time alone.Another major change is that youngsters today tend to spend a huge amount of their free time at home, inside.More than anything this is due to the fact that parents worry far more than they used to about real or imagined dangers, so they wouldn't dream of letting their children play outside by themselves. Finally, the kind of toys children have and the way they play is totally different.Computer and video games have replaced the board games and more interesting activities of my childhood.The irony is that so many ways of playing games are called "interactive".The fact that you can play electronic games on your own further increases the sense of loneliness felt by many young people today. Do these changes mean that children today have a less relaxing childhood than I had? I personally believe that they do, but perhaps every generation feels exactly the same.
Question: Which is NOT a reason for the changes?
Options: (A) Families are smaller today (B) Toys can be played by children alone at home (C) It's too dangerous to play outside (D) Parents worried too much about their children

SOLUTION: C

PROBLEM: Article: Handshaking, though a European practise is often seen in big cities of China. Nobody knows exactly when the practice started in Europe. It is said that long long ago in Europe when people met, they showed their unarmed hands to each other as a sign of goodwill. As time went on and trade in cities grew rapidly, people in cities began to clap each other's hands to make a deal or to reach an agreement. This practice was later changed into shaking hands among friends on meeting or leaving each other. "Let's shake (hands) on it" sometimes means agreement reached. Do the Europeans shake hands wherever they go and with whomever they meet? No. Sometimes the Chinese abroad reach out their hands too often to be polite. It is really very impolite to give your hand when the other party, especially when it is a woman, shows little interest in shaking hands with you and when the meeting does not mean anything to him or-her. Even if, for politeness, he holds out his unwilling hand in answer to your uninvited hand, just touch it slightly- There is generally a misunderstanding among the Chinese that westerners are usually open and straighforward, while the Chinese are rather reserved in manner. But in fact some people in western countries more reserved than some Chinese today. So it is a good idea to shake hands with a westerner only when he shows interest in further relations with you.
Question: In the old days in Europe, people put out their unarmed hands to each other _ .
Options: (A) to make a deal (B) to greet each other (C) to show friendliness (D) to reach an agreement

SOLUTION: C

PROBLEM: Article: Boom boom!( I'm here, come to me!) Krak krak!( Watch out, aleopard !) Hok hok hok!( Hey, crowned eagle!) Very good -- you've already mastered half the basic vocabulary of the Campbell's monkey, which lives in the forests of the Tai National Park in Ivory Coast. The adult males have six types of call, each with a specific meaning, but they can mix two or more calls together into a message with a different meaning. Having spent months recording the monkeys' calls in response to both natural and artificialstimuli , a group led by Klaus Zuberbuhler of the University of St. Andrews in Scotland argues that the Campbell's monkeys have a certain form ofsyntax . This is likely to be controversial because despite great effort to teachchimpanzees language, they showed little or no ability to combine the sounds they learned into a sentence with a larger meaning. Syntax, basic to the structure of language, uniquely belongs to humans. "Krak" is a call that warns of leopards in the neighborhood. The monkeys give it in response to real leopards and to leopard shouting broadcast by the researchers. The monkeys can vary the call by adding "-oo": "Krak-oo" seems to be a general word for hunter, but one given in a special context - when monkeys hear but don't see a hunter, or when they hear the alarm calls of another species. The "boom-boom" call invites other monkeys to come toward the male making the sound. Two booms can be combined with a series of "krak-oos", with a meaning entirely different to that of either of its single parts. "Boom boom krak-oo krak-oo krak-oo" is the monkey's version of "Timber!" - it warns of falling trees. If Zuberbuhler is correct, the Campbell's monkeys can both vary the meaning of specific calls by adding something and combine calls to make a different meaning.
Question: What is the passage mainly about?
Options: (A) A group of scientists. (B) Calls of Campbell's monkeys. (C) The lifestyle of monkeys. (D) The importance of language.

SOLUTION:
B