题目

求抛物线f(x)=1+x2与直线x=0,x=1,y=0所围成的平面图形的面积S. 答案：解：选词填空。1. Everyone _______ tired and hungry.2. I see some children _______kites.3. I want to buy _______ for my family.4. The buses and big trucks go _______.5. There _______many people in the Beijing Train Station.