表皮海绵形成
参考答案：表皮海绵形成：表皮细胞间水肿，主要棘细胞间水肿，间隙增宽，充盈浆液，细胞棘刺明显，形成海绵状外观。
— Is your school far from your home?
— Yes.It me an hour home.
A．takes; to walk
B．take; walking
C．took; to walk
D．is taking; walk
双壳体的刮板流量计的测量室的壁内外压差为零。
