He was ______ medical student before he turned _______ engineer.A.a; anB.the; th

He was ______ medical student before he turned _______ engineer.A.a; anB.the; th

题型:不详难度:来源:
He was ______ medical student before he turned _______ engineer.
A.a; anB.the; theC.a; /D./; an

答案
C
解析
第一空表示一的概念,后一空前用了连系动词turn,所以名词前不用冠词。
举一反三
--- Really? Who will give ______ lecture? What is it about?
--- Professor Chen, ______ President of Peking  University, about pollution.
A.the; aB.a; theC.the; 不填D.a; 不填

题型:不详难度:| 查看答案
--- Do you take ______ sugar in your tea?
--- I used to, but now I’m on ______ diet. I’m trying to lose weight.
A.the; theB.不填; aC.不填; 不填D.the; a

题型:不详难度:| 查看答案
However, in ______ recent years, Niagara Falls have come to be appreciated more for their natural beauty as ______ wonder of nature.
A.不填; a B.the; theC.不填; theD.the; a

题型:不详难度:| 查看答案
The invention of_________ paper was a great contribution to________human civilization.
A.a;aB.the;theC./;/D.the;/

题型:不详难度:| 查看答案
This area experienced.____ heaviest rainfall in _____month of May.  
A. 不填; A.               B. a; the                  C. the; the              D. the; a  
题型:不详难度:| 查看答案
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