明明班有25名女生,20名男生.任意挑选一人,选到明明的可能性是几分之几?
1÷(20+25),
=1÷45,
=145;
答:选到明明的可能性是145.
Someone is ringing the doorbell.Go and see________. [ ]
A. who is he
B. who he is
C. who is it
D. who it is
中油加油卡丢失以后,客户到()办理挂失手续。
A.任何一个加油站
B.发卡储值网点
C.地市公司
D.银行