A. The cost of a single language for global communication is heavy.
B. Careful analysis by the higher education agencies and the governors is necessary to reduce its cost.
C. Great contributions have to be made by the public to reduce the cost.
D. Students should have a clear eye to find out which language to learn.

A. To win his game in baseball. B. To be a professional in baseball.
C. To meet a living being from another planet. D. To be able to read science fictions every day.