欢迎阅读英语九上同步练习册答案必备2022九年级英语下册配套练习册答案仁爱版Unit 9 when was it invented ?一： 1. invented 2.invention 3.adjustable 4.heat 5.slippers 二： 15 CBCCC三： 1. What, used for 2. Who , invented 3. is , cleaned 4.must be repaired 5. to seeSection B一： 1.notice 2. salty 3.produced 4. remain 5.pleasant二: 2.too thin 2.by accident 3.According to, was discovered 4. by mistake 5.in this way ,in the end 6.fell into三: 15:AADCD 610:BDBDC 1112 :AC四: for, on, Who , think, are, inwentions, is , mostSelf Check and Reading二: 1.helpful 2.invention 3.salt 4.the most popular 5.safety 6.wood三: 1.It is believed 2.named 3. to learn 4.was sent 5.was handed in 6.Was ,cleaned 7.found him 8.When was, invented四: 15:BADBA 610:CADAB五: 15:ABCAC6.He grew vegetables in his garden and sold them.With the money he set up a chemical lab.7.Yes.Because he was awarded 1368 separate and distinct patents during his lifetime.8.February 11th,1847 9.October 18th ,1931 10.America 11.Built a lab 12. 136813. His first patented invention was an electrical vote recorder in 1868.14. 18761877,invented the phonograph.15.19001910, invented and perfected and steel alkaline storage battery.Unit10 By the time I got outside ,the bus had already left九年级上册英语配套练习册答案外研版、1、 meaning2、 wonder/want to know3、 successful4、 survey5 、neighbour、1、 try/do our best2、 be deep in thought3、 live a happy life4、 write down5、 think about6、 in the end、12345CCAAA、 1、 to answer2、 so successful3、 to be good to others4、 around me5、 in the future英语初三年级上第一单元练习册答案SectionA四、1.Howdoes;learn2.Whynot3.fiveyearsago4.doesnt;ask5.Has;had;yetSectionB四、1.dont;either2.tostudy3.spent;on4.too;to5.HowdoesSectionC一、15CDCBD610BADCC二、1.wactching2.playing3.making4.singing5.developing6.woulde7.read8.truly9.speaking10.(to)carry五、15ABCCD610ACBDC六、15BCADD