问题
选择题
His son has been late three times _______ the morning of last Thursday. [ ]
A. in
B. on
C. since
D. until
答案
答案：C
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His son has been late three times _______ the morning of last Thursday. [ ]
A. in
B. on
C. since
D. until
答案：C
以下每道试题有2～6个提问，每个提问有5个备选答案，请选择1个最佳答案。
| 患者，女，52岁，二尖瓣关闭不全病史15年，近日出现心悸，胸闷，行PDE检查显示重度二尖瓣反流。 |
该患者查体不可能出现的体征有
A．抬举样心尖冲动
B．收缩期震颤
C．S1减弱
D．可闻及收缩期杂音
E．杂音向颈部传导