题目

—Hi, Lucy．Do you know where Linda is?        —She________in the library．I saw her there just a few minutes ago．     A．shall be                                       B．must be     C．should have been                               D．might have been 答案：B人体中消化和吸收的主要场所是（ ）A. 口腔 B. 胃 C. 小肠 D. 大肠