一 You shouldn't take photos inside the museum; it's against the rules.
一 Sorry. I will never do it again.
A:cameras
B:food
C:pictures
m____ nk____ y 猴子
用光学显微镜观察有丝分裂过程,如果仅从细胞分裂周期来看,图中植物作为实验材料最适合的是( )
不属于一对相对性状的是