世界上海洋与陆地的比例大约是[ ]
A．7：3
B．3：7
C．6：4
D．4：6
答案：A
It was too dark, and I couldn’t _______ the words written on the blackboard.
A．look at
B．turn up
C．decide on
D．make out
简答休克的一般治疗措施
