体表无损伤而深部脏器发生损伤多见于（）。
A.挤压伤
B.钝性外力挫伤
C.冲击伤
D.创伤性窒息
E.辗轧伤
参考答案：B
I often ______________ my homework ______________ 7: 00 in the morning.[ ]
A. do, in
B. does, at
C. do, at
