把正确对话的代表字母写在横线上。
①Here you are, Grandma. ____ A. They are in my bag.
②What do you need? ____ B. I need some orange juice.
③Where are my rulers? ____ C. Great!
④Let's have lunch, Sally. ____ D. Thank you, Sally.
构成我们人体的组织细胞每时每刻都和毛细血管中的血液进行物质交换,细胞由此不断的进行着自我更新。面对这一事实,你认为毛细血管不应该具有的特点是
—I'm 1.42 metres.
—Oh! ________ I'm 1.38 metres.