welcoming to international students.
Most Americans recognize that universities contribute to the nation’s well-being through their scientific research, but many fear that foreign students threaten American competitiveness by taking their knowledge and skills back home. They fail to grasp that welcoming foreign students to the United States has two important positive effects: first, the very best of them stay in the States and –like immigrants throughout history-strengthen the nation; and second, foreign students who study in the United States become ambassadors for many of its most cherished (珍视) values when they return home. Or at least they understand them better. In America as elsewhere, few instruments of foreign policy are as effective in promoting peace and stability as welcoming international university students.
1. From the first paragraph we know that present-day universities have become_________.
  A) more and more research-oriented              B) in-service training organizations
  C) more popularized than ever before             D) a powerful force for global integration
2. Over the past three decades, the enrollment of overseas students has increased__________.
  A) by 2.5 million                             B) by 800,000
  C) at an annual rate of 3.9 percent               D) at an annual rate of 8 percent
3. In the United States, how many of the newly hired professors in science and engineering are foreign-born?
  A) 10%              B) 20%              C)30%  &nb