The dress is _____ expensive that I can't buy it. [ ]

A. very

B. so

C. too

D. much

绞窄性肠梗阻所致的休克是

A．心功能不全
B．血容量过多
C．血容量不足
D．容量血管过度收缩
E．急性肾功能衰竭