As is well known, the brain performs a very important _______, which controls the nerve system of the body.
| A．motion | B．action | C．function | D．fact |
Would you please make up a topic ______ discussing at tomorrow’s conference?
| A．worth | B．worthy | C．worthwhile | D．worth while |
Required to accomplish it within the given time, we are working under _______ pressure at the moment.
| A．steady | B．secure | C．extreme | D．precise |
Though he was born and brought up in Australia, he can speak ______ Chinese.
| A．fluent | B．smooth | C．flowing | D．floating |
The advertisement says this material doesn’t ______ in the wash, but in reality it does.
| A．decrease | B．shrink | C．slim | D．disappear |
We had to ______ our visit to the Bird Nest because we didn’t have enough time to see them before we left Beijing.
| A．prohibit | B．postpone | C．promote | D．deposit |