低渗性缺水的常见病因是
A．急性肠梗阻B．感染性休克C．肺炎高热D．慢性十二指肠瘘
参考答案：D
---Is there anything special you’d like for the dinner, Teddy?
--- Nothing______, as usual, Mummy.
A．on the whole
B．in particular
C．in general
D．in total
