九年级下册英语配套练习册答案,只有第9单元就好?

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人教版九年级下册英语（新目标）配套练习册答案 2013-01-25 | 阅：1 转：41 | 分享腾讯空间人人网开心网新浪微博腾讯微博搜狐空间推荐给朋友举报修改山东省人教版九年级下册英语（新目标）配套练习册答案 Unit 9 when was it invented Section A 一：1.invented 2.invention 3.adjustable 4.heat 5.slippers 二：5 CBCCC 三：1.What,used for 2.Who ,invented 3.is ,cleaned 4.must be repaired 5.to see Section 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 三:5:AADCD 10:BDBDC 11~12 :AC 四:for,on,Who ,think,are,inwentions,is ,most Self Check and Reading 一:1.century 2.knock 3.below 4.wooden 5.towards 6.developing 7.divided 8.active 9.aim 10.create 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 四:5:BADBA 10:CADAB 五:5:ABCAC 6.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 12.1368 13.His first patented invention was an electrical vote recorder in 1868.14.1876~1877,invented the phonograph.15.1900~1910,invented and perfected and steel alkaline storage battery.