休克的根本病因是
A．血压下降B．心功能不全C．微循环障碍D．心排量下降E．有效循环血量下降
参考答案：E
It was July 24th when he arrived in London, ______ the 30th Olympic Games would be declared open 3 days later.
A．that
B．how
C．where
D．Who
矛盾
