题目

设集合，，若中恰含有一个整数，则实数的取值范围是（   ） A．    B．   C．   D． 答案： —Skipping breakfast is a great way to lose weight． —_____ ．Actually it has the opposite effect．     A．That’s not the case    B．I cannot agree more     C．That’s for sure       D．I'm glad to know that