1. A_________ gain or profit is the actual gain after all working expenses have been paid.
A. gross B. net
C. positive D. negative

2. A better working environment improves people's performance, and _________ productivity.
A. furthermore B. hence
C. moreover D. even

3. A completely new situation will ________ when the examination system comes into exist-ence.
A. rise B. arise
C. raise D. arouse

4. A cork will ________ in water, but a stone sinks.
A. fly B. flow
C. float D. drift

5. A dark suit is preferable _________a light one for evening wear.
A. to B. than
C. for D. against

6. A deputy director will be _________the whole factory next week when the director is away for a month.
A. in favor of B. in charge of
C. in place of D. on behalf of

7. A few minutes after the plane had taken off, it _________to the ground,
A. crashed B. crushed
C. dashed D. flashed

8. A friendship may be _________, casual, situational or deep and lasting.
A. identical B. original
C. superficial D. critical

9. A good newspaper publishes both __________ and foreign news.
A. current B. latest
C. recent D. domestic

10. A good teacher must know how to _________ his ideas.
A. convey B. display
C. consult D. confront