Since China adopted its open-door (6) _____ approximately twenty-five years ago, Chinese higher education

Choose the letter A, B, C or D to complete the passage below

   Since China adopted its open-door (6) _____ approximately twenty-five years ago, Chinese higher education has begun once again to draw closer to the (7) _____ Western world. China's (3) _____ to send scholars and students to the United States at the end of the 1970s, after thirty years of hostility between the two countries, marked a dramatic turning (4) _____ in the nation's educational history. Today, about 50,000 Chinese students, are studying in the United States, accounting (5)_____ 10 percent of the total international students in the country.

Question 6: