A:4∶9
B:8∶11
C:10∶11
D:31∶44
________that the way people spend their Spring Festival has changed a lot in the past ten years.
下列字形和加横线字注音全部正确的一项是( )
“良药苦口利于病,忠言逆耳利于行”以下能反映统治者践行这个道理的是( )
求证:△BDE是等腰三角形.