人教版基础训练-英语(新目标)九年级全一册第9单元答案.doc

与人教版义务教育课程标准实验教科书配套基础训练（含单元评价卷） 英语（新目标） 九年级 全一册参考答案课时练习部分参考答案Unit 9When was it invented?第1课时(Section A 1a2c)课前预习一、1.was invented2.inventor3.inventions二、1.discovered2.was invented3found4.find out课堂练习一、15CCBCD二、1.When was；invented2.Who was；discovered by3.invented many things4.was seen to work5.are used for；are used to课后巩固一、1.when the telephone was invented2Was it invented earlier than the car3.Whats it used for4.Which is more useful，the telephone or the car5.Do you want a car二、15BADBC610ACADB三、15CABCB第2课时(Section A 3a4)课前预习一、1.bulb2.microwave3.helpful4.because二、1.do you think2.more；to work；play3.an annoying；annoyed4.to have；listen to；all day课堂练习一、15CDCAB610BCCAC二、1.are planted2.was cleaned3.will be held4.be allowed5.are taken care of6.better7.helpful课后巩固一、14DAAB二、1.speaking2.their3.first4wants5.dropped6.dirty7.lesson8.times 9.has10.always第3课时(Section B 1a2c)课前预习一、1.sweet2.sour3.thin4.crispy5.salty6.thick二、1.by mistake2.salty enough3.in the end4.are crispy课堂练习15CDBDC610DAABA课后巩固一、1.giving2.agreed3.play4left5.to get6.called7.stand8holds二、15DBAEC第4课时(Section B 3a4b)课前预习一、1.salty2.mistaken3.potatoes4.development5.invention6.tasty二、1.by accident2.According to3.fell into；remained4.noticed；produced；pleasant smell5.In this way课堂练习一、15BADAB610BBCDC二、1.be taken2.pleased；pleasant3crying4.fell5.mixture课后巩固一、15BADCD二、15CDABD610ABBAC三、15CBDAC第5课时(Self Check & Reading)课前预习一、1.century2.crispy3.knock4towards5.believed6.sour二、1.a very popular activity2.is played；more than；including3.is believed4.Knocking into；falling5.The number of课堂练习一、16CCDDBB二、1.The number of；is2.A number of3.Its said that4.over5.learn