单项选择题
W: When is the meeting over M: It is supposed to end at 3:30. But the chairman never lets us out on time.
A. The time was changed again. B. It always ends on time. C. It lasts longer than it is supposed to. D. It isn’t supposed to end.
A. they have no planets and satellites B. we cannot travel at the speed of light C. we need further research in physics D. they are beyond our travelling distance
A. American medical schools have more applicants than other planes. B. Language is a big problem that all the American students applying to foreign medical schools have to face. C. Graduates from both American and foreign medical schools should take the same test before being anthorized to practise. D. As many as one-third of last year’s applicants to medical schools are now applying to foreign schools.