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.

[EX Q]: Article: Gauri Nanda sees a wearable computer as a handbag -- one that's built out of four-inch squares and triangles of fiber, with tiny computer chips embedded in it. It looks, feels and weighs like your typical leather purse. That's where similarities end: This bag can wirelessly keep track of your belongings and remind you, just as you're about to leave the house, to take your wallet. It can review the weather report and suggest that you grab an umbrella. This purse can even upload your favorite songs onto your scarf. Sure, a computing purse and scarf set may seem like the stuff of science fiction. But these devices, part of next generation of wearable computers, could become commonplace within a few years. DuPont created new super strong fibers that can conduct electricity and can be woven into ordinary-looking clothes. And the chipmaker developed chip packaging allowing wearable computers to be washed, even in the heavy-duty cycle. As a result, these new wearable devices are different from the heavy and downright silly versions of the recent past, which often required users to be wrapped in wires and type on their stomachs. Unlike their predecessors, these new wearable computers also make economic sense. When her bag becomes commercially available in two to three years, Nanda expects it will cost around $150, which is the price of an average leather purse. Here's how the bag works: You place a special radio-signal-transmitting chip on to your wallet. A similar radio in your purse picks up the signal and notifies you that you've forgotten to take your wallet. In turn, sensors on your purse's handles will notify the computer that you've picked up the purse and are ready to go. _ Indeed, more people will want to cross that bridge in the coming years -- making for a booming market for wearable computers that don't like something out of science fiction.
Question: Which of the following describes a wearable computer?
Options: (A) It can be washed in a washing machine. (B) It is much heavier than a leather purse. (C) It can download songs from the Internet. (D) It is made of clothes conducting electricity.
[EX A]: A

[EX Q]: Article: The Chinese invented paper in 105 A. D. They mixed the bark of a tree and rags with water, put a screen into the mixture, and lifted out a thin piece of wet paper. They dried the paper in the sun. The Chinese kept their secret of how to make paper until a war with Muslims in the ninth century. The art of papermaking soon spread throughout the Muslim world. The Mayan Indians in Central America and Pacific Islanders also discovered how to make paper, but their knowledge never spread to the rest of the world. For centuries, all paper was made by hand. Rags were the main material. Then a French scientist discovered that people could make paper from wood, too. Finally, in the eighteenth century. a Frenchman invented a machine to make paper from wood.
Question: Who discovered how to make paper?
Options: (A) The Chinese. (B) The Pacific Islanders. (C) The Mayan Indians. (D) All of the above.
[EX A]: D

[EX Q]: Article: There has been much discussion recently about reducing the weight of English in China's high-stake tests such as the national college entrance examination. It is argued by some applauding the recent change to reduce the importance of English in tests so that it will lead students to focus more on learning Chinese. The TV program Writing in Chinese has exposed the problem that students and the general public cannot write in Chinese as they used to do. Some blame the design of the curriculum for giving English an equal or greater amount of emphasis, which might have contributed to the failure in teaching Chinese. But this is probably not a fair accusation since children in English speaking countries cannot spell either. I doubt that studying English in itself hurts the study of Chinese. In fact, high achievers in English or another foreign language are more likely to be high achievers in Chinese. It has been proved many times in recent Chinese history that those capable of using a foreign language are also masters in their mother tongue. Qian Zhongshu, Lu Xun and Lin Yutang are just a few examples. Another trend of thought for curriculum reform is related to the perception of "worth". It is true that English is one of the subjects that students do spend too much time on, with pitiful results. This makes some doubt if it is worth giving it priority. But this is not a sound argument either as students still need to study things that matter more to their future in spite of challenges learning English presents to them. Improvements in Chinese language education should not be achieved by sacrificing another important subject. There should be a robust foreign language education program, as a foreign language improves a student's future job prospects. Bashing English education as a waste of time or using it as a goat for failures in Chinese education are both harmful tendencies. To be constructive, we ought to start a dialogue on ways to make improvements in learning outcomes so that students' time learning English is spent more effectively. There are a few things that could improve English education, such as assessment design,learner motivation and teaching style, I am sure there are many other areas where changes can greatly improve the effectiveness and efficiency of English learning. The public discourse at present is a little oversimplified. People are arguing for or against English having less weight in major tests, when the dialogue should be taken a step further, to the improvement of learning or teaching methods that may benefit the teaching of other subjects as well, Chinese included.
Question: According to the passage, which of the following statements is right?
Options: (A) The TV program Writing in Chinese is very popular at present. (B) Good results of learning English are not worth so much time. (C) Some are in favor of attaching less importance to English in exams. (D) Sacrificing English can improve Chinese language education.
[EX A]:
C