environmental damage is done, it takes many years for the ecosystem（生态系统）to recover.
| A．Even if |
| B．If only |
| C．While |
| D．Once |
—He didn’t devote his time to his study，did he?
—．As a result，he failed all the final exams．
| A．Yes，he did | B．No，he didn’t |
| C．Yes，he didn’t | D．No，he did |
As a Senior 3 student，if you want to get a good result，it is important toa good state
of mind for the coming entrance examination．
| A．keep up | B．carry out | C．keep off | D．keep out |
To compete more effectively with others，it is time that university studentsto study
abroad after graduation．
| A．tried | B．are trying | C．try | D．will try |
My daughter likes to have her photos takenthere are many different kinds of
flowers．
| A．there | B．in which | C．when | D．where |
Children won’t put on weight easily if theyto eat fruit and vegetables．
| A．persuade | B．were persuaded |
| C．will be persuaded | D．are persuaded |