英语 module5《a lessen in a lab》period1暑假预习题（外研版必修1）

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1、英语：Module5《ALesseninaLab》Period1暑假预习题（外研版必修1）Ⅰ.完成句子1.Differentmetalshavedifferentuses（有不同的用途）,forexample,steelisusedincars,andironisusedinelectricalequipment.2.Whenweusemetals,itisimportant（重要的）toknowhowtheyreactwith（和……反应）differentsubstances,forexample,waterand

2、oxygen.3.Hereisatablewiththemetalsthatreactmost（反应最剧烈）atthetop,andthemetalsthatreactleastatthebottom（在下部）.4.Pushsomecottonwooldownthetube（顺着试管）.5.Half-fillatesttubewithwaterandadd（加入）twoorthreecleannails.Ⅱ.根据汉语意思完成句子1.大约2/3的学生能升入大学。Abouttwo-thirdsofthestudentsca

3、ngointotheuniversity.2.北京的天气和上海的天气不同。TheweatherinBeijingisdifferentfromthatinShanghai.3.关上门，别把冷气放进来。Closethedoorandkeepthecoldoutoftheroom.4.在现代社会，高科技被用于农业生产。Inmodernsociety,technologyisusedinagriculture.5.酸和碱反应生成盐。Anacidcanreactwithanalkalitoformasalt.Ⅲ.句型转换1.W

4、henheated,themetalexpands.→Whenyouheatthemetal,itexpands.2.ThedistanceofourhometownfromBeijingis400kilometers.→Ourhometownis400kilometersawayfromBeijing.3.Four-fifthsofthestudentshavebeenadmittedintotheuniversity.→80percentofthestudentshavebeenadmittedintotheuni

5、versity.4.Thetwobrothersaredifferentthoughtheyaretwins.→Thetwobrothersarenotthesamethoughtheyaretwins.5.Ourteachershowsusthenewpictureofhisown.→Ourteachershowsthenewpictureofhisowntous.