A. In the twentieth century , many books have been produced in paper-back editions . B. At work, your clothes must convey the

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问题    A. In the twentieth century , many books have been produced in paper-back editions .
   B. At work, your clothes must convey the message that you are competent, reliable and authoritative.
   C. At the medical conference, Dr. Dong felt quite confident in his area of research and was able to perform well in his presentation.
   D. Many students today display a worrying tendency to choose universities , fields of study and careers on the basis of earning potential.
在医学会议上,董博士对自己的研究领域颇为自信,而且他所做的发言也相当成功。

选项 A、 
B、 
C、 
D、 

答案C

解析 根据Dong和his可得。
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本试题收录于: 英语题库普高专升本分类
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