【单选题】听力原文:W: We have made ten copies. M: At first it's planned to need ten copies, and now we don't need so many. Five would be enough. Q: How many unnecessary copies they have made? (3)
【单选题】Recent stories in the newspapers and magazines suggest that teaching and research contra diet each other that research plays too prominent a part in academic promotions, and that teaching is badly und...
A.
It is wrong to overestimate the importance of teaching.
B.
Teaching and research are contradictory to each other.
C.
Research can never be emphasized too much.
D.
The relationship between teaching and research should not be simplified.
【单选题】A copy machine makes 60 copies per minute. A second copy machine makes 80 copies per minute. The second machine starts making copies 2 minutes after the first machine starts. Both machines stop making...