人教版英语九年级（全一册）Unit 6 When was it invented 单元测试1

数”的结构可知,所缺的词是形容词最高级biggest。\r61.【答案】problem\r【解析】下文中提到了现在的无人驾驶汽车一个“难题”,故所缺的词是problem。\r62.【答案】if\r【解析】“如果”无人驾驶汽车没有及时收到指令,就会撞车,故所缺的词是if。\r63.【答案】reduce\r【解析】5G网络会“减少”所花费的时间,故所缺的词是reduce。\r64.【答案】your\r【解析】“你的”冰箱可以自己在网上订购鸡蛋,故所缺的词是your。\r65.【答案】on(公众号:齐齐课堂)\r【解析】根据设空后的“April27”可知,此处要填的是介词on。\rⅧ.书面表达(20)\r【参考范文】\rIthinkthetrainisoneofthegreatestinventionsinhistory.Doyouknowwhoinventedit?\rLetmetellyousomethingaboutit.ThetrainwasinventedbyGeorgeStephenson.Hewasan\rengineerfromBritain.Hedidalotofexperimentsandmadethefirsttrainin1825.Asteamengine\rwasusedinthistrain.Onthefirstdaywhenthetrainran,peoplealongthewayheardthenoise\randsawitrunning.Theythoughtitwasamonster.Theyranbackhome,closedtheirdoorsand\rwereafraidtocomeout.Butnowthetrainisoneofthemostimportantmeansoftransportationin\rtheworld.\r15