填空题.Every September, the price of a flight from China to a major American metropolis like Boston or New York soars. In addition to the usual stream of business managers and tourists shuffling between the two countries is the annual inflow of young Chinese, girls in ponytails and boys in sneakers, headed to their American colleges. 11 Backpacks hiked up on their shoulders and suitcases rolling behind, they carry transparent plastic folders with neat arranged sheets and 12 pamphlets showing their first destination on the new soil. In the past decade, China witnessed an explosion in the number 13 of citizens studying abroad, a 21st-century manifestation of a deep-rooted Confucius value that emphasizes on education. Even 14 before they enter high school, children of middle class families from cities across China start to see liuxue—studying abroad—the default 15 choice. They devote hours of their class time to prepare for American 16 standardized exams from the SAT and GRE to the International English Language Testing System, often scoring in the top quartile. In 2010, nearly 130,000 Chinese students studied in the U.S., a 30 percent increase from the year before. After surpassed India, China is 17 now America's top source of international students. Lee jumped on the wagon himself in a September of 2005, 18 traveling to far-away Massachusetts for the last two years of high school. After the initiative elation of reaching his long-strived-for 19 goal cooled and he figured out his way around the language barrier, he realized that there were smaller hurdles than language for a 20 Chinese student in America.