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Why are international students regarded asthethird great strength of U.S. higher education?
A.
Because they can bring a great deal of financial income to the U.S. colleges and universities
B.
Because they can diversify the ethnic groups in the U.S. classes.
C.
Because they can bring about new opinions, new experiences and new ideas to enrich the U.S. higher education.
D.
Because they can enrich the campus culture in U.S. universities and colleges.