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一、选择题 1.—_______Dr.ZhongNanshanknewthatCOVID-19wasadeadlynewvirus,hestillwenttoWuhaninCentralChinatohelpthelocalpeople. —Heisreallyabraveandkinddoctor. A.If B.Assoonas C.Because D.Although 2.Plentyofideaswereconsidered________theartistdecidedonthedesignofthesculpture. A.before B.so C.unless D.because 3.Smilingisthebestpolicy.Peoplewillsmileback________yousmileatthem. A.unless B.although C.until D.when 4.Manypeopledonotrealizetheimportanceofhealth_________theyhavefallenill. A.until B.while C.when D.after 5.___________IhearKennyG'srecordingGoingHome,Ialwaysthinkofmyhometown. A.While B.Since C.Until D.Whenever 6.—ThenovelwrittenbyStephenseemsabitboringtome. —___________youputyourheartintoit,youwon'tenjoyit. A.When B.If C.After D.Unless 7.Inancienttimes,peopleseldomtravelledlongdistancesandmostfarmersonlytravelled________thelocalmarket. A.longerthan B.morethan C.asmuchas D.asfaras 8.Allstudentsshouldkeeptakingexerciseeveryday_______theyarebusystudyingsomanysubjects. A.until B.because C.though D.unless 9.Theoldcoupleinsistonlivinginasmallvillageamongthemountains__________theycangetclosertonature. A.until B.unless C.eventhough D.sothat 10.—WhatdoyouthinkofMr.Green,Tim? —Heissoboring.Hedoesn'thaveanyhobbies________youcallwatchingTVahobby. A.if B.unless C.since D.though 11.Maxgotlostandwastrappedintheforestfor10hours_______afarmernearbyfoundhim. A.if B.since C.until D.after 12.—Whenwilltherailwaythatconnectsthetwocitiesopen? —nextyear.Onlytwothirdsbeenbuilt. A.Until;has B.Until;have C.Notuntil;has D.Notuntil;have 13.—DidyouwatchtheNewsNetworkShowyesterday? —Yes,ofcourse.Inevermissit________Ihavetoomuchhomework. A.unless B.until C.if D.since 14.Alltheteenagersshouldkeeptakingexerciseeveryday________theyarebusystudyingsomanysubjects. A.until B.because C.unless D.though 15._______Chinahascontrolledthevirus,somepeopleinotherpartsoftheworldstillliveinfearoftheirlives. A.While B.Although C.Unless D.Until 16.—_________Ihavetriedmanytimes,Ican'tworkitout. —Don'tgiveupandlet'shave