味觉发育的关键时期()
A.2~3个月
B.3~4个月
C.4~5个月
D.5~6个月
E.6~7个月
参考答案:C
_____, we lack practice and experience nowadays in dealing with the complicated economic situation. [ ]
A. Luckily
B. Previously
C. Doubtfully
D. Indeed
舒张早期奔马律的临床意义不包括()
A.反映心室顺应性减退
B.反映心室收缩功能严重低下
C.反映心室舒张期容量负荷过重
D.反映心室充盈压、左房压下降
E.治疗后随心功能好转,奔马律可消失