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.
--------
Question: Article: Most middle school students find it boring to learn math. But students in Yet Sen Middle School in New York, US, don't think so. Why? Because they are in the school of One Program, which asks students to work on their own or in small groups on computers to have math lessons. "The program gives the students a new learning style. No traditional classroom can compare with it. We give each lesson according to the students' interest and their strong and weak points, "said Joel. Klein, the school's headteacher, "We're looking for a new way that interests students. " Students enjoy these math lessons, especially lessons with video games. They must find out the answers to math problems to get through the game. One such game is Dimension M. As students move through mazes with their keyboards, some questions come up. Caleb Deng had to answer the question: What is 5+(6x3)? He _ on paper quickly because there was just a minute left to play. "I was right, "said Deng, 14, as he ended the game with a high score . "This really makes math lessons more exciting, since we are fighting to learn better. "
Question: Students in Yet Sen Middle School like math because _ .
Options: (A) they work in large groups (B) they can work on computer (C) the teachers are interesting (D) math questions are easy there

Answer: B

Question: Article: On the second day of the World Internet Conference themed with cybersecurity and international cooperation held in Wuzhen, an official with China's network emergency watchdog said that 6,118 domestic websites have been controlled by the United States, according to Shanghai Securities News. Among the hacked websites in the first half of this year, 48.8 percent were under the thumb of overseas IP addresses, said Huang Chengqing, director-general of the National Computer Network Emergency Response Technical Team and Coordination Center (CNERT/CC). He added that the US contributed the most, followed by Hong Kong, which controlled 3,097, and South Korea with 2,307. Among the overseas IP addresses inserting backdoor programs in domestic websites, the US accounted for 29.3 percent, South Korea for 6 percent and Hong Kong for 5 percent, he said. In addition, 4.9 percent of government websites have been attacked, and 3.2 percent inserted with backdoor programs. Huang also said that the number of Chinese computers affected by Trojan Horse viruses reached 190,000 in the six-month period. To safeguard cybersecurity, the CNERT/CC has cooperated with the Association of Southeast Asian Nations, and built relationships with 59 countries and 127 organizations. Over the past two years, the center dealt with more than 15,000 cross-border online security cases.
Question: The theme of the World Internet Conference is _ .
Options: (A) the safety of the Internet (B) international control and worldwide cooperation (C) cybersecurity and international cooperation (D) network emergency.

Answer: C

Question: Article: Tour One invites you to join our tours of the Capital City. Your host will entertain you with historical anecdotes and offer an endless supply of "insider" tips to make your visit wonderful. Your time with us will be the highlight of your visit to Washington DC. Because class size does matter, Tour One uses a minibus for your convenience and personal attention. Also a minibus can easily get in and out of the popular areas. You're not here to waste time. Day tour picks you up at your hotel in DC at 9 am. Your personal tour guide will _ while you are visiting the White House, the US Capitol, the Arlington National Cemetery, the Lincoln Memorial, the Vietnam Veteran's Memorial and the Korean War Veteran's Memorial. Your 90-minute lunch break will be at the Smithsonian Natural History Museum. The eventful day tour ends at 5 pm back at your hotel. The price is $60 per adult, $40 per child under 13 years. There are no admission fees because all government buildings, the Smithsonian Museum, memorials and monuments have free access. Tour One Inc. accepts credit cards, checks, cash and stock options. If you have any questions or wish to make reservations , please e-mail us at the bottom of the page. The night tour will show off the true glory of the glowing symbols of the nation. We pick you up at your hotel at 7 pm and drop you back by 10 pm. You will visit the Iwo Jima, the Jefferson, the Kennedy Center and the FDR Memorials. The price is $25 per adult and $15 per child under 13 years. Contact us at TOUR ONE INC. POB 77084 Washington DC 20013. Office: 202-487-TOUR. Fax: 301-530-5542. E-mail: ThePresident@whitehousetours.com.
Question: The purpose of this passage is to _ .
Options: (A) advise people to learn more about the Capital City (B) introduce Tour One Inc. to us (C) advertise a tour in the Capital City (D) attract people to go on the tours

Answer:
D