单项选择题
A.important for graduate students in humanities B.difficult for graduate students in humanities C.common for undergraduate students in science D.easy for undergraduate students in science
A.They promote international trade. B.They allow very rapid money transfers. C.They are still limited to small transactions(交易). D.They are dependent on good telecommunications systems.
A.I appreciate your helping me. B.Now that you’ve asked me, I think it’s too short. C.If I were you, I’d write about my education first. D.If you don’t think it’s any good, please say so. E.I’d better tear up the letter and start all over again. F.But, unless I miss my guess, you should say something about your family, too. G.Just make a few changes, I think, and it will be perfect. H.You are welcome.