已知函数f（x）和g（x）的图象关于原点对称，且f（x）=x2+2x．若函数h（x）=g（x）﹣λf（x）+1在[﹣1，1]上是增函数，求实数λ的取值范围．
解：根据已知条件知，g（﹣x）=﹣f（x）=﹣x2﹣2x=﹣（﹣x）2+2（﹣x）；
∴g（x）=﹣x2+2x；
∴h（x）=﹣x2+2x﹣λ（x2+2x）+1=（﹣1﹣λ）x2+（2﹣2λ）x+1；
即h（x）=（﹣1﹣λ）x2+（2﹣2λ）x+1；
①若λ=﹣1，h（x）=4x+1，满足在﹣1，
I drink orange juice every day．(改为一般过去式)
I____orange juice yesterday．
I'm Jim. Today is my birthday. I want to thank my family for their love. So I cook dinner for them. I know my mother likes hamburgers and salad. But my father likes chicken and tomato soup(汤). I have a brother. He likes hamburgers, too. But he doesn't like salad. He likes carrots. I have a sister, too. She likes fish(鱼肉) and bread. I like chicken and strawberries. I will buy these things for the birthday party.
