单选题
I was ______ in my reading, and didn't at first hear the doorbell ting.
A. immured B. immersed C. busy D. infatuated
A
B
C
D
【正确答案】
B
【答案解析】
[解析] A．immured监禁，禁闭。B．immersed沉浸，使陷入。be immersed in专心于，沉浸于。C．busy忙碌。be busy doing忙于做某事。D．infatuated昏头昏脑的，使入迷。
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