A:tears came to my eye
B:my heart was full of gratefulne
C:my eyes were filled with tear
D:I could hardly hold back my tear
若圆x-32+y+52=r2上有且只有两个点到直线4x-3y=2的距离为1,则半径r的取值范围( )
∵ ∠1=∠2,(已知)
又∠3=∠2,(____)
∴∠1=____.(____)
∴ AB∥CD.(____,____)