触诊时,扪及右肋缘下肿块,可能是:①肿大的胆囊;②肿大的肝脏;③右肾下极;④阑尾炎性肿块()
A.①②③
B.①③
C.②④
D.④
E.①②③④
参考答案:A
The author was required to submit an _____ of about 200 words together with his research paper.[ ]
A. edition
B. editorial
C. article
D. abstract
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