A、In 1925. B、In 1950. C、In 1932. D、In 1952. D[听力原文] When did all Asian immigrants gain the right to citizenship? [听前预测] 由选项可知本题询

In only two decades Asian Americans have become the fastest growing of the US minority. As their children began moving up through the nation’s schools, it became clear that a new class of academic achievers was emerging.Their achievements are reflected in the nation’s best universities, where mathematics, science and engineering departments have taken on a decidedly Asian character. This special liking for mathematics and science is partly explained by the fact that Asian American students who began their educations abroad arrived in the US with a solid grounding in mathematics but little or no knowledge of English. They are also influenced by the promise of a good job after college. Asians feel they will be judged more objectively. And the return on the investment in education is more immediate in something, like engineering than with an arts degree.
   Most Asian American students owe their success to the influence of parents who are determined that their children take full advantage of what the American educational system has to offer. An effective measure is homework. Asian parents spend more time with their children than American parents do, and it helps.
  Both explanations for academic success worry Asian Americans because of fears that they feed a typical racial image. Many can remember when Chinese, Japanese and Filipino immigrants were the victims of social isolation. Indeed, it was not until 1952 that laws were laid down giving all Asian immigrants the right to citizenship.