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2020-2021学年英语新教材人教版必修第一册课时作业4UNIT1DISCOVERINGUSEFULSTRUCTURES&LISTENINGANDTALKINGWORD版含解析.DOC

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Ⅰ.阅读理解MiddleSchoolLaboratorySafetyRulesScienceisaboutdiscoveringandexploring(探索)thenaturalworld.Explorationscanoccurintheclassroom,laboratoryorfield.Aspartofyoursciencelessons,youwilltakepartinmanyactivitiesusingmanydifferentmaterials,equipmentandchemicals，whichcanbedangerousifnotusedcorrectly.Asaresult,youmaybefacedwithbiological,chemicalorphysicalhazards.SafetyisTHEMOSTIMPORTANTthing.Thefollowingsafetyruleshavebeendevelopedfortheprotectionandsafetyofeveryone.★Behaveyourselfinaresponsiblewayatalltimes.Riskybehaviorsuchasthrowingthingsanddoingexperimentswithoutteachers'instructionsisnotallowed.★Eating,drinking,chewinggum，wearingmake­up,touchingcontactlenses(隐形眼镜)orotherunsafeactivitiesarenotallowed.★Donotenterorworkinthelaboratoryunlessaninstructorispresent.★Neverenterareaswherechemicalsarekept.★Takinganychemicalsorequipmentawayfromtheclassroomorlaboratoryisnotallowed.Thesafetyrulesmustbefollowedatalltimes.Reviewtheseruleswithyourteacherandparents,thensignandgetthesignature(签名)ofaparent.Thesignatureshowsthatyouunderstandthelabcanbedangerous,andthatyouhavereadtherulesandagreetofollowthematalltimes.Signaturesareneededbeforeyoucangoonwithanylaborscienceclassroomactivity.这是一篇说明文。文中介绍了中学实验室的安全规则及注意事项。1．Whatdoestheunderlinedword“hazards”probablymeaninParagraph1?A．Illnesses.B．Examinations.C．Dangers.D．Experiments.答案：C解析：根据文章第一段内容可知，在实验课上，学生会使用到各种材料，仪器及化学用品。由文中的“whichcanbedangerousifnotusedcorrectly”可知选C。2．Whichofthefollowingmightbeallowedinthelab?A．Drinkingsoda.B．Havingbreakfast.C．Takingawaychemicals.D．Wearingglasses.答案：D解析：根据文中“Eating，drinking...arenotallowed”可知戴隐形眼镜是不被允许的，但框架眼镜应该可以。故选D。3．Whatshouldstudentsdoafterreadingtherules?A．Signtoagreetotherules.B．Getateacher'ssignature.C．Takeatestonsafetyrules.D．Goonwithlabactivities.答案：A解析：根据文中最后一段“Reviewtheseruleswith...andagreetofollowthematalltimes.”可知，学生阅读并签字同意遵守这些规则。故选A。Ⅱ.完形填空WhenIwasinprimaryschool,Igotintoamajorargument(争论)withaboynamedTominmyclass.Ican't1whatitwasabout,butIhaveneverforgottenthe2Ilearntthatday.Iwas3thatIwas