A:①③
B:②③
C:①④
D:②④
分式 3a2b ,﹣ 12ac2 , 23b2c 的最简公分母是____.
“女学生已经开始觉悟,抵制学校开设的‘列女传’。在操场的树荫下,在宿舍里,他们常常聚在一起,争得面红耳赤,后来由争论变成抗婚、逃婚,以实际行动反抗旧礼教,争取婚姻自由。”这则材料反映的是( )
A. My father is a teacher.
B. I'm very happy.
C. This is Lily's family.
D. My sister is very tall.
E. I am a student.