The movie was supposed to be very good since it won __________ awards.
下列物质属于等电子体一组的是( )
①____一年沙尘暴总天数最多?是____天?
②____一年沙尘暴总天数最少?是____天?
③十年以来沙尘暴总天数的整体趋势是上升还是下降____?