2006年考试辅导之专升本英语词汇练习二
86He had such a good command of English that he could read English ______.
A native B original C D
87The auto manufacturer hopes to increase ______ by three times.
A product B quality C output D amount
88_____ do we owe the discovery of penicillin？
A Who B Whom C To whom D By whom
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