______ on a true story, the film is well worth ______ .
| A．Based; seeing | B．Basing; seeing | C．To base; to see | D．Based; to be seen |
Four Chinese models were ________ the 14 people awarded prizes on Friday at the World Supermodel Competition.(2009·上海)
| A．among | B．between | C．along | D．beside |
It's not easy to change habits，________ with awareness and self－control，it is possible.
| A．for | B．or | C．but | D．so |
There's no way of knowing why one man makes an important discovery________another man，also intelligent，fails.
| A．since | B．if | C．as | D．while |
It was a real race________time to get the project done.Luckily，we made it.
| A．over | B．by | C．for | D．against |
A serious study of physics is impossible________some knowledge of mathematics.
| A．against | B．before | C．beyond | D．without |