Mary: Helen is a mere washer woman, yet she's now buying a big house. Carol: Yes. Because she's always saved ________. A. what little she earns B. how little she earns C. for l
For the love of reading The importance of nurturing (培养) young children as readers has become more and more apparent. Here are four ways to help your child become a reader. Read aloud. A si
=x-4,则实数x的取值范围是 . 
=|x-4|=x-4,所以x≥4.