2020_2021学年广东广州白云区广州白云广雅实验学校初二下学期期中英语试卷

2020~2021学年广东广州白云区广州白云广雅实验学校初二下学期期中英语试卷一、完形填空1.Acollegeteacheroncegavealivelyclasstohisstudents.Hebeganbyholdingupaglasswithsomewaterinit.Hehelditupforalltosee,andaskedthestudents,“Howmuchdoyouthinkthisglassweighs?”“50g!”“100g!”“125g!”thestudentsanswered.“Ireallydon’tknowunlessIweighit,”saidtheteacher,“butmyiswhatwouldhappenifIheldituplikethisforafewminutes?”“Nothing,”thestudentssaid.“OK.WhatwouldhappenifIheldituplikethisforanhour?”theteacherasked.“Yourarmwouldbeginto.”saidoneofthestudents.“Youareright.Now,whatwouldhappenifIhelditupfora?”“Youmighthavemuscles(肌肉)stress.Youcouldmovethearm,”saidanotherone.“Youmighthavenointhearm,orparalysis(瘫痪),”saidanaughtystudent,“Youmustgotothehospitalforsure!”“Verygood.Butduringthisperiod,didtheweightoftheglass?”askedtheteacher.“No,”thestudentssaid.“Thenwhatthearmacheandthemusclesstress?”Thestudentswereinsilence.“Nooneknows?theteacherasked,“Well,canyoutellmehowtoit?”“Puttheglassdown!”saidoneofthestudents.“Exactly!”saidtheteacher.”Theproblemsoflifeares