下列哪项属于复杂反射？（ ）
A：闻到肉香分泌唾液
B：眨眼反射
C：吃酸杏分泌唾液
D：膝跳反射
—Yes，it's _______ September 3rd _______ each year．It tells the world that Chinese people love peace and hate wars．Chinese people will never forget the history．
气流处于上升状态的气压带是（ ）
