A:S>3
B:S>6
C:3≤S≤6
D:3<S≤6
蔬菜叶肉细胞与口腔上皮细胞相比,特点是( )
实验室中有五瓶失去标签的溶液,分别是稀H2SO4、Ba(NO3)2、NaOH、Na2CO3和FeCl3,在不 用其它试剂的情况下进行鉴别,请回答下列问题.
(____) What does your mother do?
(____) Oh, great!
(____) She's a nurse.
(____) Look! This is my mother.
(____) Oh! She's beautiful.