病人面无色，无寒热。脉沉弦者，（）；浮弱，手按之绝者，（），烦咳者，（）。
参考答案：衄；下血；吐血
His sacrifices for the country were never officially________, which made all of us feel discouraged.[ ]
A. acknowledged
B. appealed
C. recommended
D. evaluated
T密度的单位正确的是（）。
A、m3/h
B、m/h
C、kg/h
D、kg/m3
