A:x-12+y2=6425
B:x2+y-12=6425
C:x-12+y2=1
D:x2+y-12=1
石灰吟
【明】____
____,____。
He fell off the bike and hurt his leg yesterday._______, he had to stay at home for two or three months.
如下图是稀HCl和NaOH溶液反应的pH变化曲线图,据图分析能得出的结论正确的是( )
①存款业务 ②贷款业务
③结算业务 ④发行人民币