China is not only ________ engine for world's economic growth, but also _______ role model for other developing countries.
| A．an, the | B．the;an |
| C．the, the | D．an；a |
相关试题
Though a typhoon is on the way, people are still looking forward _________ the outdoor 
concert by the pop singer.
| A．to canceling | B．not to canceling | C．not to cancel | D．to not canceling |
－Mary, how did your Math test go?
－I had thought I _________, but in fact I came in the top 10% in my class.
| A．should have failed | B．couldn’t have failed |
C．might have failed | D．shouldn’t have failed |
Rome was not built in a day. You should set ____ goals and work hard to achieve them.
| A．alternative | B．considerable | C．subjective | D．realistic |
—Was it there _______ you were away to answer the phone?
—There is no doubt about it.
| A．that | B．which | C．while | D．where |
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