问题
选择题
The author was required to submit an _____ of about 200 words together with his research paper.[ ]
A. edition
B. editorial
C. article
D. abstract
答案
答案：D
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The author was required to submit an _____ of about 200 words together with his research paper.[ ]
A. edition
B. editorial
C. article
D. abstract
答案：D