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更多“净化空调系统（air leaning system)的含义是…”相关的问题
第4题
听力原文：（A) He's placing the folders on top of the cabinet（B) He's opening the cupboard d
听力原文：(A) He's placing the folders on top of the cabinet
(B) He's opening the cupboard doors.
(C) He's stacking the boxes on top of each other.
(D) He's leaning over the cabinet drawer.
A．
B．
C．
D．
