阅读理解
Waitress: Good morning. Can I help you?
Lucy: Yes, I want a hot dog. Do you want a hot dog, too, Mary?
Mary: No, I don't like hot dogs. I want two hamburgers.
Waitress: And to drink?
Lucy: A cola for me, please.
Mary: And I want some milk, please.
Waitress: OK. Anything else?
Lucy and Mary: No, thanks.
根据对话内容判断正误。

我国正在实施的西部大开发的省区中，不属于西部经济地带的是（　）

若函数f（x）=x³﹣ax²﹣ax在区间（0，1）内只有极小值，则实数a的取值范围是（   ）

There are five chairs ___ ,but I am at a loss which to buy .

我喝一些橙汁。

I have ____ ____ ____.