与十分位相邻的两个数位分别是______和______．

主动脉瓣关闭不全患者心浊音界是（）

A.梨形

B.靴形

C.烧瓶形

D.普大型

E.心底部增宽

Woman: Come on, we’re almost there. I’ll race you to the top of the hill.
Man: I’m so out of shape. I might have to crawl the rest of the way.
Question: What can be inferred about the man().

A. He’s tired.

B. He lost the race.

C. He has already been to the top of the hill.

D. He prefers doing exercise indoors.

休克的治疗目的是稳定血流动力学状态，维持收缩压在______mmHg以上。

在3G系统里面，主流的基站配置是（）扇区

简述维新派对近代新闻事业的贡献。