—__________.The highest temperature yesterday was 32°C,but it's just 18°C today.( )
A:So it is
B:So it does
C:So does it
某城市地处平原地区,下图示意该城市功能分区,若该城市功能分区合理,则其主导风向和河流的大致流向可能是( )
下列函数中属于二次函数的是( )