-2的相反数是2,
故选:A.
—Can you tell me this morning?
—Sorry, I've no idea.[ ]
A. why didn't Daming come to school
B. why Daming didn't come to school
C. why doesn't Daming come to school
D. why Daming doesn't come to school
内分泌治疗常用药物不包括
A.雌激素B.雄激素C.氯米芬D.溴隐亭E.甲氨蝶呤