细胞膜内外存在的电位差通称为
A.锋电位B.阈电位C.负后电位D.局部电位E.正后电位
参考答案:C
Do you expect _____ to be a possibility that we may have five days off for the coming Dragon Boat Festival?
A.it
B.there
C.as
D.this
美丽:漂亮
A.痛苦:厌恶
B.反对:反感
C.鼓励:打击
D.高兴:快乐