Unfortunately, the research was limited __________ increasing economic profits，__________ protecting the environment.
| A．to; other than |
| B．by; rather than |
| C．to; rather than |
| D．by; more than |
You did’t let me help. If we ___ together, you ___ so tired.
| A．Worked; didn;t get |
| B．Worked; wouldn’t get |
| C．Were working; wouldn’t get |
| D．Had worked; wouldn’t have got |
It is hard for me to imagine what i would be doing today if I ___ in love, at the age of seven, with the Melinda Cox Library in my hometown.
| A．wouldn’t have fallen |
| B．had not fallen |
| C．should fall |
| D．were to fall |
___ for the doctor’s careful treatment, he ___ till last year.
| A．If it is not; can’t live |
| B．Were it not; couldn’t live |
| C．Had it not been; couldn’t have lived |
| D．If they were not; couldn’t live |
If you can’t find a ___ job, consider taking a temporary assignment.
| A．Permanent |
| B．Continuous |
| C．Forever |
| D．Changeable |
Parents should not show ___ for any one of their children.
| A．Favour |
| B．Preference |
| C．Affection |
| D．Emotion |