2.stanford university. Stanford University. America.

3. University of California, Berkeley. University of California at Berkeley. America.

4. California Institute of Technology. California Institute of Technology. America.

5. University of Illinois at Urbana-Champaign. Urbana-Champaign University.

6.GeorgiaInstituteofTechnology。 Georgia Institute of Technology. America.

7. ann arbor University. University of Michigan at ann arbor.

Carnegie Mellon University. Carnegie Mellon University. America.

9.princeton university. Princeton University. America.

10. Cornell University. Cornell University. America.