某患者因外伤急性失血,血压降至70/30mmHg,尿量明显减少,尿量减少的原因主要是( )
A. 肾小球毛细血管血压下降
B. 肾小球滤过面积减小
C. 血浆胶体渗透压升高
D. 血浆晶体渗透压降低
We often __________ in the playground.
A. play
B. plays
C. playing
He _______ up at 6 o’clock.
A. get
B. getting
C. gets
_______ you _______ your teeth every morning?
A. Does, brush
B. Does, brushes
C. Do, brush