As _______ general rule, the working temperature of the installation (设备) is _______ more important consideration than the working pressures.
| A．a; / | B．the; / | C．the; a | D．a; a |
A brilliant idea occurred to him, ___ to his research in the lab.
| A．while devoting | B．while devoting himself |
| C．while he was devoted | D．while devoted |
He started early _______he could get there before nine
| A．in order that | B．because | C．so as to | D．in order to |
The policeman caught hold of the thief and hit him ____the head．
| A．in the | B．on his | C．on the | D．in his |
The song ____My heart will go on is liked by the young people
| A．call | B．calling | C．called | D．to call |
_______terrible weather we’ve been having these days！
| A．How a | B．What a | C．How | D．What |