Question

.
Playing with a cell phone, he suddenly ________ the teacher staring at him.

A．knew of	B．became aware of
C．reflected	D．aware for

Answer 1

B

考查短语辨析。knew of 了解，became aware of 意识到，reflected 反映，句意：他在玩手机，他突然意识到老师正在盯着他。所以选B。