A:细胞膜的基本骨架是②
B:细胞膜的功能复杂程度主要与①有关
C:②是静止的,但①是运动的,所以细胞膜具有流动性
D:脂溶性物质可通过细胞膜是因为②
When the meeting was ________, they all ________ to their feet and left.