(    )54．Why should we take care of library books?

A．Because somebody has torn the book

B．Because somebody has lost some of the pages

C．Because they are read by boys and girls

D．Because if one person is careless with a library book，then it can’t be read by others

(    )53．The last two paragraphs tell us     

A．to put a paper cover on a library book

B．1ibrary books must be taken care of at home

C．taking more care of library books

D．don’t tear library books

(    )52．The first paragraph tells us        

     A．how books are made

B．lots of different work for a book published

C．before a book is published many people read it many times

D．there must not be any mistakes in the book．

(    )51．A good title for this reading selection is       

A．How Books Being glade                  B．About Book

C．Taking Care of Books                 D．Books Published in the Country

  (    )50．When both halves of the earth are the same distance from the sun，we have     ．

        A．spring and autumn              B．spring and winter

        C．summer and winter               D．summer and antumn

B

    Have you ever thought how books are made? Well，after a book is written．it passes through the hands of many different workers．Each one works very carefully，for there must not be any mistakes in the book．It is read many times by different people before it is finished．

    Millions of books are published in our country every year．So people can get enough to read．Now may I ask you a question? How well do you take care of books? What have you learned about the care of books?

Perhaps you bought yourself some new books．Have you put paper covers on them? Do you open them carefully?

    Do you always put a paper cover on a library book too? Even more care must be taken of library books，for they are read by many boys and girls．If one person is careless with a library book，then it can’t be read by others．Don’t you sometimes say：”Somebody has torn this book, somebody has lost some of the pages? ”And you are angry．

    Many people like reading．They always take care of books．

(    )49．When we have winter，the part of the earth that we stand on is         ．

        A．near the sun

        B．nearer to the sun

        C．farther away from the sun

        D．the some distance as the other part from it

  (    )48．When the earth goes round the sun，we have      on the part that is towards the sun．

        A．spring                 B．summer        C．autumn           D．winter

  (    )47．There are four seasons in a year because      

        A．the earth moves round the sun

        B．the sun turns round the earth

        C．the sun moves from one place to another

        D．the earth travels nearer and nearer to the sun

  (    )46．We can see sunrise and sunset because          ．

        A．the sun is near to us

        B．the earth turns round every day

        C．the sun goes out of the clouds in the daytime and into them at night

        D．the earth moves round the sun