The tutor（导师）asked his students to leave a wide ________ when typing their essays.
| A．border | B．column | C．surrounding | D．margin |
The way he acted towards people was to keep on good terms with them ______ principle, which was usually thought little of.
A. at the mercy of B. at the risk of
C at the expense of D. at the bottom of
Loud music like hip hop can make a driver drive far more ______, braking harder and accelerating faster.
| A．aggressively | B．deliberately |
| C．tentatively | D．definitely |
From the course of human development, the ultimate aim of the human race is to pursue the spiritual joy based on ______ materials.
| A．artificial | B．primitive |
| C．relevant | D．ample |
No matter how much knowledge you have, if your subject is at all ______, be careful when discussing it during your speech, or you may well offend your audience.
| A．diverse | B．sensitive |
| C．abstract | D．original |
Having manners shows good character, consideration and respect for others, taking you where degrees and money cannot and ______ a better world.
| A．taking over | B．adapting to |
| C．making for | D．fitting into |