We stopped , but heard nothing from the

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问题选择题

We stopped , but heard nothing from the room.

A. to listening to
B. to listen to
C. listening
D. to listen

答案

答案：D

选择题

—I missed the first part of the film. It was really a pity.

—You __________ home half an hour earlier.

A．should go

B．must have gone

C．should leave

D．should have left

单项选择题 A1/A2型题

幼儿期动脉导管未闭绝大多数属于（）。

A.主动脉内为混合血

B.右心室内为混合血

C.动力性肺动脉高压

D.器质性肺动脉高压

E.肺动脉内不含动脉血