【同步练习】《Unit4 Lesson21》（冀教版）

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1、Unit4TheInternetconnectsUSLesson21Booksorcomputers同步练习◆根据汉语意思填空1.Whendidtheworld’sfirstcomputer___________（出现）？2.The____________（现代的）technologychangesourlife.3.Howcanweusethese____________（电子的）machines?4.Whatabout____________（出售）thesecomputerinlowprices?5.I

2、think____________（知识）isthemostimportantthingintheworld.◆介词填空1.Peoplebegantowritetheirstories___________paper.2.Wecanreadbooks__________manydifferentways.3.It’seasy___________ustousethiskindofcomputer.4.Allthesestoriesarewritten___________hand.5.Ancientpeopl

3、epassedonwhattheyknow_______tellingstories.◆英汉互译1.你知道如何造纸吗？Doyouknow________________________________paper?2.写一本书要花费很长时间。_______________________alongtime________________________abook.3.电子书改变了人们的阅读习惯。E-bookschangethepeople’s________________________.4.无论你说什么，我

4、都相信你。________________________________yousay,I’llbelieveinyou.5.我们有很多读书的方式。Wehavemany________________________________books.◆句型转换1.Thehistoryofbooksisveryinteresting.（改为感叹句）________________________thehistoryofbooksis!2.Peoplecanbuythingsonlineeasily.（改为同义句）__

5、__________________________peopletobuythingsonline.3.Shewrotesomewordsonthefirstpageofthebook.（改为一般疑问句）___________________________________________wordsonthefirstpageofthebook?4.Ittookherawholedaytofinishthatstory.（对画线部分提问）________________________________itta

6、kehertofinishthatstory?5.Ihavealreadyreadthebooksaboutpaper.(改为一般疑问句)_______you_______thebooksaboutpaper________?◆阅读理解从WhenItakeawalkaroundWashingtonSquarePark,Ioftenseemanypeoplewalkingwiththeirdogs.Itisstilltruethatthedogisthemostusefulandfaithfulanimalin

7、theworld,butthereasonwhypeoplekeepdogshavechanged.Theyusedtokeepdogsinordertokeepsafe,butnowtheykeepthemasfriends,becausethecitycanbealonelyplace.Forachild,adogisaplaymate(玩伴)whenhehasnolittlefriendstoplaywith.Foryoungcouples,adogistheirfriendwhentheyfeello

8、nelyathome.Foroldcouples,adogistheirchildwhentheirrealchildrenhavegrownup.Nowyoucanseethereasonwhypeoplekeepdogs.根据短文内容，回答下列问题。（10分）1.Doesthewriterthinkadogisthemostusefulandfaithfulanimal?____________