【单选题】What is Olga unsure of?
B.
How many copies to make
C.
When Kelsey's is closing
D.
Where Kelsey's is located
【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)
【简答题】It produces more copies at a minute.
【单选题】猪瘟时常见于盲肠、结肠和回盲口处的坏死性肠炎为( )
【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...