题目

一本故事书有180页，小东3天读了72页。照这样的速度，再读多少天可以读完这本书? 答案：解：设再读x天可以读完这本书，72：3=(180-72)：x 72x=108×3 x=324÷72 x=4.5答：再读4.5天可以读完这本书.Today people can use the phone to talk with others almost anywhere on earth. But when you use the phone, you don’t see the person you are talking with. That may change in the future.Now some people are using a kind of telephone called the picture phone or vision phone. With it, two people who are talking can see each other.Picture phones can be used when you have something to show to the person you are calling. They may have other uses in the future. One day you may be able to ring up a library and ask to see a book. Then you’ll be able to read the book right over your picture phone. Or you may be able to go shopping through your picture phone. If you see something in the newspaper that you want to buy, you’ll use your phone and call the shop. People at the shop will show you the thing you are interested in right over the phone. You’ll be able to shop all over the city and never even leave your room!1.Today people can use the phone to talk with others ____________.A. in all villages B. in some places in the worldC. only in big cities D. almost anywhere on the earth2.The underlined word ＂it＂ in the article means ____________.A. the picture phone B. any phoneC. the use D. the change3.We can ____________ through the picture phone according to the article.A. write a book B. do shoppingC. play games D. have glasses4.Picture phones are very ____________.A. useful B. impossibleC. bad D. necessary5.The title of the article can be ____________.A. Reading on the telephone B. Shopping on the phoneC. Picture phones D. Talking on the phone