关于左心室,正确的叙述是()
A、房室口有三尖瓣
B、前尖瓣位于主动脉口前外侧
C、左心室前内侧部称主动脉前庭
D、室壁较右心室薄
E、有3组 * * 肌
参考答案:E
—Mr Johnson, what are teachers supposed to do for the students?
—As teachers, we feel ________ our duty to teach our children to be good wherever we are.[ ]
A. this
B. that
C. it
D. there is
哪年哪月哪日,新疆省人民政府宣告成立?