--- Yesterday Tommy walked past my table and ______ my bowls and dishes.

--- He should be careful next time.

A．knocked off

B．took off

C．showed off

D．turned off

相邻肺泡之间气体流通的小孔（）

A.肺内结缔组织、血管、淋巴管和神经等

B.肺泡

C.Ⅱ型肺泡上皮细胞

D.肺泡孔

E.肺巨噬细胞