我想去美国学生物技术，那些学校的生物技术排名比较前?去这些学校的雅思或托福要多少分呢？

USNEWS2008生物排名：

1 Stanford University

2 Massachusetts Institute of Technology

2 University of California--Berkeley

4 California Institute of Technology

4 Harvard University

6 Johns Hopkins University

7 Rockefeller University

7 Scripps Research Institute

7 University of California--San Francisco

7 Washington University in St. Louis

7 Yale University

12 Cornell University

12 Duke University

12 Princeton University

15 Columbia University

15 University of Michigan--Ann Arbor

15 University of Wisconsin--Madison

18 University of Californ