判断  阅读下面的材料，判断下列句子是否符合短文内容。符合内容的选正确，不符合的选错误。

    Different people have different skin（皮肤）. Some have black skin. Some have yellow skin, and some have white skin. There was a woman in Alaska. Her skin was orange. It was almost the color of orange juice.

    How did her skin become orange? She ate lots of tomatoes, carrots, and squashes (南瓜). She ate too many orange things. That's why her skin turned orange.

    The woman didn't want her skin to be orange, so she went to see the doctor. The doctor said. “Stop eating orange things. Eat some green things.” The woman did so, and her skin wasn't orange any more.

函数y= $\sqrt{x-1}$ 中，自变量x的取值范围是（　　）