以下哪些证券业务可以跨一级分行办理。（）
A.交易账户变更
B.交易账户异常变更
C.证券卡变更
D.证券卡异常变更
参考答案：A, C
At times, worrying is a normal, ________ response to a difficult event or situation --- a loved one being injured in an accident, for example.
A．effective
B．individual
C．inevitable
D．unfavorable
如图所示是汽油机一个工作循环，四个冲程按正确顺序应该是
A．甲、乙、丙、丁
B．乙、甲、丁、丙
C．丙、甲、丁、乙
D．甲、丁、乙、丙
