题目

Mothers holding jobs outside the home should have flexible schedules to make it easier to________their children. A．care about                   B．take care C．care for                     D．care of 答案：C植物吸收水分主要是在根尖进行，其中吸水能力最强的是（ ）A．根冠B．分生区C．伸长区D．成熟区