萎缩性胃炎时哪种指标明显降低
A.BAOB.MAOC.PAOD.隐血试验E.尿素测定
参考答案:B
解析:MAO明显降低见于萎缩性胃炎、慢性胃炎、幽门狭窄等。
—________ you called yesterday evening?
—My sister. Why?[ ]
A. Who it is that
B. Who is it that
C. Who was it that
D. Who it was that
简述秘书活动的基本要素。