两个直角三角形全等的条件 ( )
A:一锐角对应相等
B:两锐角对应相等
C:一条边对应相等
D:两条边对应相等
—It's on January first.
根据句意和首字母提示补全单词。
若点P(1-2a,a-1)关于原点对称的点是第一象限的点,则a的取值范围是( )
— Could we practice playing the guitar in the hall, Sir ? —No , ___________ you have the principal's (校长) note.