苏东剧变之后，世界政治格局的发展趋势是( )
A．单极化
B．两极化
C．多极化
D．全球化
参考答案：C
—Tom is in low spirits today. He ______ again in the job interview.
—What a pity! He has been greeted with bad luck these days.
A．could fail
B．may fail
C．must have failed
D．must fail
眼线笔（液）每日使用一次。保存期为液体（），固体笔2~3年。
A.6~8个月
B.6~12个月
C.6~10个月
D.6~11个月
