静息电位是指细胞未受刺激是存在于细胞膜外侧的电位。
参考答案:错
下列动物中,不属于澳大利亚特有的是:
A.考拉
B.袋鼠
C.鸭嘴兽
D.斑马
Mr Brown and his family have _______ Sanya for a few weeks. [ ]
A. been in
B. worked
C. gone to
D. left for