-xx-y=x-x+y=xy-x.
故选A.
治疗前列腺癌的药物或措施中错误的是()
A.雌二醇氮芥
B.雄激素
C.缓退瘤
D.药物去睾
E.放射治疗
I am ______ than her.[ ]
A. a little outgoinger
B. a littler outgoing
C. a little more outgoing