强化技能限时训练(九)语法填空+阅读理解+完形填空(限时35分钟)Ⅰ
语法填空阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式
Thetruth1
treesarevitaltoourlifeisnotasecret
Theyprovideuswithfood,woodandmost2
(important),oxygen
Nowthereisonemorethingwecanaddtothislist—blockingoutharmfulbacteriafromwater
Thediscovery3
(make)byateam4
(consist)ofscientistsfromtheMassachusettsInstituteofTechnology(MIT)andhighschoolstudents5
wereseekinganaturalwaterfilter—onethatwouldhelpcommunitiesindevelopingcountriesthatdonothave6
(accessible)tomodernwaterfiltersystems
(research),ledbyProfessorRohitKarnik,decidedtoturntotreesforhelpbecausetheycouldallowliquidtoflowthrough,whileblockingoutairbubbles
Theybeganbycutting1
5-inch-widesectionsoftreebarkfromthebranchesofawhitepinetree
Thepeoplerelatedthentestedthewood’sfilteringabilitybypouringwatercontainingredd