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1、词汇运用(九) 科普知识+学习提高 【Group1】Ⅰ.用方框中所给词语的适当形式填空。每词限用一次。through collect difficult honest putoff1.Myunclehasalarge ofstampsfromallovertheworld. 2.The boytoldhisteacherthatitwashewhobrokethewindowwithaball. 3.WhenMaYunwasacollegestudent,helearnedspokenEngl
2、ish talkingtoforeignersinhotels. 4.Wewon't thesportsmeetingunlessitrainsheavily. 5.Thelittlegirlhadsome indoingherhomework,soshecalledupSueforhelp. Ⅱ.根据短文内容和所给中文提示,在空白处写出单词的正确形式。每空限填一词。Intoday'sworld,sleepexpertsoftensaythatforabetternight'srest,Americansshouldt
3、urnofftheirsmartphonesoriPadsbeforesleeping.Suchelectronicproductsmakethe6. (大脑)moreactive,andtheninfluencesleep.Butaccordingtoalatest7. (调查),morethan90%ofAmericansoftenuseacomputerorsomeotherkindsofelectronicproductsinthehourbeforebed. Researchersfindthatman-mad
4、elightfromsomeelectronicproductsatnightmayreducethebrainchemicalsthathelpsleep.Inthestudy,theresearchersletvolunteersread,playgamesandwatchmoviesonascreenfordifferenttimewhile8. (测量)howmuchlighttheireyesreceived.Theyfoundthattwohoursofsittingbeforea9. (明亮的)screenat
5、nightreducedthesleepchemicallevelsbyabout22%. Thentheresearchersstudiedthe10. (学院)studentswhooftenusedcomputersatnight.Theygotthesimilar11. (结果).Researcherssaythatmaynotonly12. (引起)sleeplessness,butalsoraisetheriskofobesity(肥胖症),diabetes(糖尿病)andother13. (疾病
6、). Tobeonthesafeside,theresearchers14. (建议)thatweshouldusecomputerslessthanbefore,orturndownourscreensasmuchas15. (可能)beforesleeping. 【Group2】Ⅰ.用方框中所给词语的适当形式填空。每词限用一次。throw decide advantage helpful afterall1.Beforewemakeany ,weshouldlistentowhattheotherssay. 2
7、.Youshouldbeeasyonthesestudents. ,theyarekids. 3.Nooneknowshowmuchfoodis awayinourcountryeveryyear. 4.Thewholeworldistalkingaboutthe of5GtechnologyprovidedbyHuawei. 5.ThoughthelearningAppsare ,theyareharmfultothestudents'eyesightaswell. Ⅱ.根据短文内容和所给中文提示,在空白处写出
8、单词的正确形式。每空限填一词。Anewtermhasbegun.Thisyearmaybeyourbusiestschoolyearbecauseyouare6. (准备)forimportantex
