单位和个人凭已承兑商业汇票、债券、存单等付款人债务证明办理款项的结算，均可使用（）结算方式。
A.委托收款
B.信汇
C.电汇
参考答案：A
In order to save money, Jane gets up at ______dawn every day and rides her bike
to the factory in ______ distance.
A．a; /
B．/ ; the
C．a; the
D．the ; /
下列运算正确的是[ ]
A.（x-y）2=x2-y2
B.x3·x2=x5
C.a6÷a3=a2
D.（x2）3=x5
