题目

从方框中选择适当的句子补全对话，有两项多余。A:Hello, Lucy.B:A:Do you know Kumiko? She is in Class Four, Grade Seven.B:Sorry, I don't know. A:She's tall. She has long black hair.B:A:Her dress is yellow.B:A:She is from Japan.B:Oh, I see.A:Yes. You're right. A. What color is her dress? B. Oh, I see. C. Hi, Mary. D. Where's she from? E. How are you? F. What does she look like? G. Are you friends?马德堡半球马德堡半球实验最早证明大气压强的存在，托里拆利托里拆利实验最早测得大气压强的值，一个标准大气压值相当于0.760.76m水银柱产生的压强．