th,depth,,width解析由延伸出的三个分支冋知,此处表示科罗拉多大峡等的“度、深度和罵庋67.答案climate解析曰廷伸出两入分支以及文章第四可知,北处表示科罗拉多大蚨谷的气侯,故填climate68,答案home解析廷仹岀的兩个分支以及文章倒数第二段可知,北处表示科罗拉多大蚨谷是许多动植彎家园,故填home(家园第8页69.答案a'onemiledeep解析止处并列的三个分支是介绍科罗拉多大谷的长度、深度和宽度,两个分支已经介绍了它的长庋和宽度,故该分支介绍的是它的深庋。结合文中“Itisover220mileslongandoveramiledeepinsomeplaces"可知填aionemiledeep70.答案layer解析口文章第三段中的“Thecanyonismadeoflayersofrock(若层),andeachlayerofrockhasadifferentdepthandcolor”可知,填layer(层)9页B(2018四川绵阳JackLondonwasborninSanFranciscoin1876.LifewashardwhenJackwasgrowingupandhestartedworkingwhenhewas10.Hedidlotsofdifferentjobs.Inhisfreetimehewenttothelibraryandhespentmanyhoursthere,reading.In1894hewentbacktoschool,andpublishedhisfirstshortstoryTyphoonofftheCoastofJapan.Thenin1896hewenttotheUniversityofCaliforniaatBerkeley,buthehadtoleavebecauseofmoneyproblems
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