俄罗斯的气候特点是 （ ）
A：冬季短而寒冷，夏季长而温和
B：四季分明
C：冬季长寒冷
D：长年严寒
苏伊士运河沟通的是 （ ）
— Tom, who taught Chinese before you came to China?— Nobody. I learned it by .
The top detective asked the witness if he had seen _______ at about 10 p.m.
