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