行车中发现其他机动车有安全隐患时怎么办
A．尽快离开
B．随其车后观察
C．不予理睬
D．及时提醒对方
参考答案：D
When I said that someone was late for the meeting, I ______ you. Why were you so angry at that time? [ ]
A. didn't refer to
B. wasn't referring to
C. haven't referred to
D. hadn't referred to
什么叫拱圈的最优中心角？
