腹部闭合性损伤诊断的关键在于首先确定有无（）。
A.腹壁损伤
B.内脏损伤
C.腹痛
D.恶心、呕吐
E.腹膜后血肿
参考答案：B
The computer was used in teaching. As a result, not only _____, but students became more interested in
the lessons.[ ]
A. saved was teachers' energy
B. was teachers' energy saved
C. teachers' energy was saved
D. was saved teachers' energy
目前宽带网络中采用“光纤同步数字传输体系”的英文缩写是 【7】 。
