Apples are usually sold by ________ weight and eggs are sometimes sold by ________ dozen.
| A．the; the | B．/;a | C．/; the | D．the; a |
He has accepted the job because he likes challenge, and the chance of dealing with difficult problems ____ to him.
| A．appeals | B．interests | C．deserves | D．encourages |
Johnson hasn’t felt any effect the new dieting recipe has him since he tried to lose weight three months ago.
| A．for | B．to | C．on | D．with |
Zhang Xuan, ______ university student from Shanghai, learns ______ art in her spare time.
| A．an; / | B．a; the | C．a; / | D．an; the |
Private cars will be required to stay off roads one out of five weekdays ____ the traffic pressure.
| A．to reduce | B．reducing | C．reduced | D．reduce |
It is estimated that there are more than 40 universities in Britain--nearly ____ in 1960.
| A．as twice many as | B．as many twice as | C．twice many as | D．twice as many as |