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: Printing images is easy. Just select an image of a purple robot on your PC, for example, and press print. Your home printer exactly shoots drops of ink onto a flat piece of paper, creating the robot's 2-D image. "Printing" 3-D objects is different. Take the purple robot. First select a file of the 3-D printer. Immediately, the printer begins making noise, and a nozzle releases plastic material in thin layers. In two or three hours, a 3-D purple robot is standing before you. 3-D printing has developed to the point where printers can now create high-quality objects using a variety of materials, including metals. That means 3-D printers can now make final products that meet high industrial standards. 3-D printers are already being used to make parts for racecars and jets as well as man-made limbs and hearing aids. So far, few homes have 3-D printers. That's because 3-D printing is not only new to most people but also quite expensive. To bring 3-D printing to the masses, some retail stores plan to offer the service. For example, the Staples chain of office supply stores has announced that it will offer 3-D printing in Europe beginning in 2013. Customers will be able to submit their own 3-D designs to Staples website for printing. After the job is done, they'll pick up their item at a nearby Staples store or have it mailed to their homes. This service is sure to encourage many more people to try out 3-D printing.
Question: According to this article, who are 3-D printed parts already helping?
Options: (A) People with physical disabilities. (B) People in the solar energy field (C) People who lack suitable housing (D) People in need of computer skills

SOLUTION: A

PROBLEM: Article: When you go to St.Petersburg, the number of attractions can seem large.If you are short of time, or just want to make sure to _ , these are the top must-see sights in St. Petersburg. 1.The Hermitage Museum The Hermitage Museum is one of the most important sights to see for any visitor to St. Petersburg. There are lots of different paintings by the old masters in the Hermitage. Prepare to come face-to-face with classic Western artists. 2. Kizhi Island Kizhi Island is an open-air museum of wooden architecture from the Karelia Region of Russia. These impressive structures are made entirely without nails - the wood fits together with joints and grooves . 3. Peterhof Peterhof is as beautiful as it is fun. You'll be charged for admission, but go to Petethof when the fountaions are working--during the day in the summer. They are shut off in winter evenings. 4. The Church of Our Savior on the Spilt Blood Love it or hate it, the Church of Our Savior on the Spilt Blood in St. Petersburg is an enthralling must-see sight. The beautiful look may make y our eyes brighten, and the painting sinside the church will make you say "Wow!" 5. The Bronze Horseman Statue The so-called Bronze Horseman is a part of Russian culture and a symbol of St. Petersburg. Made famous by Alexander Pushkin, this statue of Peter the Great sitting on his horse can truly show Peter the Great's influence on the Russian idce of greatness.
Question: If you are interested in paintings, you'd better go to _ .
Options: (A) Peterhof and Kizhi Island (B) the Hcrmitagee Museum and Peterhof (C) Kizhi lsland and the Church of Our Savior on the Spilt Blood (D) the hermitage Museum and the Church of Our Savior on the Spilt Blood

SOLUTION: D

PROBLEM: Article: She might not be paid, but Carnegie Mellon University's newest staff member does all that a typical receptionist can do: give directions, answer the phone -- and even gossip about her life. University officials revealed what it considers to be the world's first robot receptionist with a personality of her own. The blond receptionist, named "Valerie," puts on a headset and interacts with people by talking about her boss, her psychiatrist and her dream. Valerie, the roboceptionist, sits in a custom-made booth at the entrance of a computer science hall. With her ability to distinguish motion, she greets visitors as they come near. Type in a question on a keyboard and she gives directions around the Pittsburgh campus and provides visitors information about the weather. More than that, she tells stories about her life. From her booth, passers-by often can hear her talking on the phone. She recognizes when someone is in front of her and remembers their characteristics. She can change between tasks from talking on the phone to answering a question. Valerie, however, does have her limit. She is a drum-shaped mechanical device with a digitally lively face that appears on a computer display. Visitors have to type on a keyboard to communicate with her. And she understands only simple questions. Eventually her creators would like to install face recognition so people don't have to insert an identity card for her to remember them. And people won't have to type their questions on a keyboard if they can solve the problem of voice recognition in a crowded hall. Valerie will tell the story of a robot living in a human world.
Question: According to the passage we know that _ .
Options: (A) Valerie looks like a real beautiful woman (B) Valerie can do whatever a human receptionist can't (C) Visitors can have a conversation with Valerie (D) Valerie doesn't understand of the visitors' questions sometimes

SOLUTION:
D