题目

用括号内所给单词的适当形式填空。 1. Your______________ (foot) are big. 2. Jim has two__________ (knife) and a ruler 3. I have an apple and Lark____(have) an orange. 4. His pants_________ (be) blue 5. This is _________ (I) name card 答案：1.feet   2.knives  3.has   4.are  5.my 已知函数y＝f(x)的图象是折线段ABC，其中A(0,0)、B、C(1,0)．函数y＝xf(x)(0≤x≤1)的图象与x轴围成的图形的面积为________．