He was just about to give up hope，________a good idea came into his mind.
| A．when |
| B．while |
| C．as |
| D．since |
How I was _______when I heard the _______ news!
| A．excited; excited | B．excited; exciting |
| C．exciting; exciting | D．exciting; excited |
_______, a learned man makes fewer mistakes in life than a man without knowledge.
| A．In general | B． As general | C． On general | D．At general |
They made a scientific approach ______ the subject.
| A．at | B．in | C．to | D．of |
Not only the USA and Russia but also China ________ manned satellites to circle the earth.
| A．has sent up | B．has been sent up |
| C．have sent up | D．have been sent up |
Most members of the committee were in favour of the suggestion; only a ________ were against it.
| A．majority | B．minority | C．quantity | D．amount |