绞窄性肠梗阻所致的休克是
A．失血性休克B．感染性休克C．心源性休克D．创伤性休克E．神经性休克
参考答案：B
28. The Hotel Al Arab, ______ the first and only 7-star hotel in the world, was designed in the shape of a sail of 321 meters.
A．having been considered
B．considering
C．being considered
D．considered
论述我国计划经济时期社会福利服务体系的特点。
