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: Rock and roll music developed in the United States in the early nineteen-fifties. It was based on the music called rhythm and blues that was performed by African American musicians. Early rock and roll singers developed their own kinds of music. Elvis Presley, Chuck Berry, the Beach Boys, and Bob Dylan were the most popular rock and roll musicians in the early 1960's. All were American. Then, in 1964, a new rock and roll group from England invaded America: the Beatles. Some people say the Beatles' music shook America like an earthquake. The Beatles changed rock and roll forever. Their early songs were influenced by American rock and roll musicians, including Chuck Berry. But the Beatles looked different and sounded different from any musical group before them. The Beatles released their first album in the United States in 1964, when all of the top five records in America were by the Beatles. In 1967, they released an album called "Sergeant Pepper's Lonely Hearts Club Band." It was one of the first "concept" albums. That is, all the songs were linked by a common story or idea. The popularity of the Beatles led the way for more rock and roll bands from England to become popular in America. The Rolling Stones was the most important of these bands. The Rolling Stones is one of the few groups from the 1960's that is still performing and recording today. In 1965, the group recorded one of its most famous songs, "Satisfaction". The musical instrument most linked to rock and roll is the guitar. Experts say Jimi Hendrix was one of the most influential guitar players in rock and roll during the late 1960's. His "Purple Haze" was liked by many people. By the 1970's, rock and roll music became known as rock music. It expanded into many new forms. For example, there was country rock, hard rock, acid rock, and heavy metal rock. Punk rock, jazz rock, and glitter rock. In the middle 1970's, experts say rock music regained some of the energy of early rock and roll. Bruce Springsteen and the E Street Band became popular with their album "Born to Run". Springsteen's music was like the lively rock and roll music of the early nineteen-sixties. Many of his songs were about social issues. He sang about the effects of unemployment and the war in Vietnam. 
 Question: The main topic of this passage is   _  . 
 Options: (A) the history of American music (B) the famous rock and roll groups (C) the new forms of rock and roll music (D) the development of rock and roll music
[EX A]: D

[EX Q]: Article: Last year, over 206,000 students from the United States studied abroad. Does that number surprise you? These students already know the benefits of studying abroad. You may be wondering why you should study abroad. Here are some answers for you. * Timing The absolutely best time in your life to study abroad is when you are in college. If you miss this opportunity, it's almost impossible for you to do it later in life. * To gain cross-cultural experience Life overseas makes you see your everyday world in a whole new light. You don't even realize it, but our culture shapes the way we view the world and affects us every minute of the day. Differences in culture are more than just differences in language, food, clothing and art. * To improve your communication skills and your self-confidence People who study abroad tend to be willing to take risks, willing to put themselves in unusual situations, and able to solve problems. * To become more fluent in a language or to learn a new language The world market is becoming smaller, and many companies require a second language. Foreign languages are not only valuable in the job market but also valuable in the real world. * For the adventure Travel to other cities within your host country and around neighboring countries. As you get to know your new classmates, roommates, and host family, you will gain a unique view on the host culture. Discover the differences and, more importantly, the many similarities between your worlds. The friendships you make will last long after the program. * To learn more about yourself Find out who you really are. What are your limits? How do you overcome the difficulties you've never _ before? How independent are you? These questions are hard to answer until you are removed from your usual surroundings. After solving difficult problems on your own overseas, you'll find that almost nothing will confuse you at home. Students who study abroad commonly report that their study abroad experience actually changed their lives. 
 Question: The passage mainly talks about   _  . 
 Options: (A) the benefits of studying abroad (B) the time for studying abroad (C) the difficulty you come across when you're abroad (D) some tips on how to get used to a new environment
[EX A]: A

[EX Q]: Article: A Samoan airline says that it is the world's first carrier to charge passengers by their weight. Samoa Air, which opened in 2012, asks passengers to give their personal weight during booking, which is then charged according to the length of a flight. The customers will also be weighed just before they board the plane. "It is believed that all people throughout the world are the same size," Samoa Air CEO Chris Langton said. "Airplanes always run on weight, not seats." "There is no doubt in my mind that this is the concept of the future. This is the fairest way of your travelling with your family or yourself." Though the airline introduced the plan last November, it caught people's attention last week when the carrier began international flights to neighboring American Samoa. Almost at the same time, a Norwegian economist, Bharat Bhatta, published a report suggesting that airlines should charge obese passengers more. The Pacific Islands contain some of the world's most common countries for obesity, many ranking in the top 10, according to the World Health Organization (WHO). Samoa is ranked number four, with 59.6 percent of the population considered obese, said the most recent WHO report. According to Samoa Air's latest schedule, the airline charges up to $0.57 per kg for flights in Samoa and $1.03 per kg for its only international flight to American Samoa, around 250 miles. Children under 12 are charged 75 percent of the adult rate, with fares also based on weight. Any overweight baggage is calculated at the same rate as the passenger's personal weight. The plan could actually prove cheaper in some cases, such as for families travelling with small children, and Langton said customer reaction has mainly been "amazingly positive". The idea of charging passengers by weight has been hotly discussed before, and in the US some airlines require those who do not fit into a seat comfortably to buy a second seat. 
 Question: In Bharat Bhatta's eyes, Samoa Air's plan might be   _  . 
 Options: (A) funny (B) acceptable (C) strange (D) disappointing
[EX A]:
B

