题目

选词填空。snows; warm; cool; hot （1） In this season, it's and the days are long. （2） In this season, it often in Harbin. （3） In this season, the weather is and the colours are pretty （4） In this season, it's and windy. We often plant(种植) trees. 答案：【1】hot 【1】snows 【1】cool 【1】warm3．下列电离方程式中，不正确的是（　　）A．HCl═H++Cl-B．H2SO4═2H++SO42-C．FeCl3═Fe3++Cl-D．NaOH═Na++OH-