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.

Q: Article: *Basic Study Manual Hardcover: $ 37.50 Future success depends on the ability to learn. Here are the answers to the questions most often asked by parents, teachers, business trainers and by students themselves. Read this book and learn: * What the three barriers to study are - and what to do about them * What to do if you get tired of a subject you are studying * Twenty-six simple drills to help you learn how to study easily, rapidly and with full understanding * Buy and read the Basic Study Manual and use it to dramatically improve your ability to study. *Study Skills for Life Hardcover: $31.99 L. Ron Hubbard's study technology for teenagers opens the door to their future success by giving them the ability to study and learn. Fully illustrated for easy comprehension. * Learning How to Learn Hardcover: $24.99 The basics of effective study for 8-to 12-year olds, fully illustrated. Children who read and apply the materials in this book regain their liking for study and their ability to apply this knowledge in life. Get this book for a child you want to see win at his studies! * How to Use a Dictionary Picture Book for Children Hardcover: $34.90 In spite of billions of dollars spent on "educational research," children are not taught the most basic skills of learning, even the most basic of these: how to use a dictionary. In fact, a search of educational books for children found not one that told them how to use a dictionary -or that one should. Written for children 8 to 12-year old, this fully illustrated book will teach your child: * How to find words in a dictionary * The different ways that words are used * What the different marks and symbols that are used in a dictionary mean * How to use a dictionary to correctly pronounce words Includes a section for parents and teachers showing you how to use this book with children. Buy this book and give it to your children to unlock their education. What's more, you'll just pay 50% for it before May 1, 2008.
Question: According to the advertisements, the four books are all intended for _ .
Options: (A) teachers (B) adults (C) children (D) women

A: C
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Q: Article: Ever tried taking smart drugs to perform better in exams? They certainly work. Before last summer's exam, a few of my mates, merely out of curiosity, took a considerable amount of Modafinil, a drug normally used for narcolepsy . Guess what? While I was feeling sleepy, bored by revision, my mates were more focused. Modafinil is a smart drug that gives a user a feeling of staying awake for hours. It also sharpens the mind, improves memory and helps problem-solving. But it does more than just keeping you awake. It disturbs your mental system, making you desperate to do what you are doing. You just don't want to do anything else but revise all the time non-stop. A recent study discovers that healthy people use smart drugs, like Modafinil, to get down to and complete tasks they have been putting off, because these tasks seem more enjoyable when taking these drugs. This might sound like what a stressed student desires. However, the pills have a range of side-effects. "At present no evidence shows that these drugs are safe in healthy people," as a medical expert puts it, "Ordering online, though easy, is a dangerous way to obtain drugs. You never know what you're actually purchasing. " In my experience, Modafinil changes people's behaviour too. Over those weeks my friends became different people--in turn aggressive, cold. Even eating became "a waste of time" and so did conversation. A BBC survey found that of those who had tried smart drugs before, 92% would do so again. My friends say they'd happily do so without considering the practice a form of cheating. I admit I was curious--but not enough to try it. Seeing the strange behaviour of other users, I feel a little bit upset and scary. Modafinil may promise to change your grades, but it might also change the way you act. Don't say you haven't been warned!
Question: According to the author, his mates took Modafinil for the purpose of _ .
Options: (A) escaping from reality (B) getting better exam results (C) curing their narcolepsy (D) leading an active life

A: B
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Q: Article: Customs are social habits. They have been handed down through generations among groups, social classes, etc. Customs can be described as ways of doing things. They are particularly strong in social practices on the occasions of births, marriages and deaths. In China, these days, some people in cities are learning from Western customs. For example, some brides dress in the long white dress that is usual bridal wear in many Western countries. Every people has special customs for New Year. The Han people have many interesting Spring Festival customs. And now, quite a number of people living in the cities have followed the Western customs of sending New Year greeting cards for January 1st. One interesting custom in China is that mothers wrap up their babies tightly .This is not the custom in Western countries, where babies are usually dressed in loose garments.
Question: It is true that customs_.
Options: (A) have been formed during a short time (B) have been formed little by little (C) have been quickly formed and changed (D) have never been changed

A:
B
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