While he has got high marks in the college entrance examination, he thinks that it is ______________ satisfactory.
| A．out of | B．due to | C．far from | D．free from |
Scientists have to work hard to keep _____ with modern discoveries and developments.
| A．company | B．track | C．touch | D．pace |
She _____ the temptation to buy a coat she could not afford.
| A．challenged | B．obstructed | C．contradicted | D．resisted |
He put in a special _____ for an extra day's holiday so that he could attend his daughter's wedding.
| A．request | B．demand | C．inquiry | D．proposal |
It was decided to _____ the search when there was no hope of finding the missing girl alive.
| A．call off | B．take up | C．keep off | D．ring up |
Professor Jordon is well known for his _____ into the habits of the common housefly.
| A．examination | B．introduction |
| C．research | D．expression |