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Module5AlessoninalabReadthepassageasquicklyasyoucanandchoosethebesttitleforit.Readthepassageagainandanswerthefollowingquestions:3.Whichmetalsreactwithsteam?Magnesium,aluminiumandzinc4.Doesironhaveasloworfastreactionwithsteam?Ithasaslowreaction.5.Doescopperreactwithwater?No,itdoesn’t.Readthepassagecarefullyandfillthechartonpage45.Readthepassageagainandcompletethesentences.4.Youadd_______tothewaterbecausethiskeeps__outofit.5.Itshowsthat___doesnotrustinwaterthathasno__init.CompletethepassagewithproperwordsaccordingtopassageAandBwill____underdifferentconditionsotherwiseitwillkeeptheequipmentfromworkingwell.Asweallknow,ifironisheatedinoxygen,itwillreactslowlybutwillnotforman_____.Ontheotherhand,ifitisputtogetherwithwateror_____,therewilla______reaction.Nextlet’sdoan__________tosupporttheabove.First,getatesttubefilldewithwaterandputitoverthe_____________to___forthreeminutes.Thenputthreeorfourcleannailsinthewaterwithsomeoiladdedtoitandleavethetubeforoneweek.Whathappens?Theirondoesnot____inair-freewater.Anotherexperiment,ifyouputthenailsinthetubewiththeairinitforoneweek,thenwhathappens?Ironrustsin_______water.Readaboutanincidentduringachemistrylessonandchoosethebestsummary.3.Astudentwasdoingachemistryexperimentwhenheaccidentallyheatedthewrongliquidandcausedanincidentinthelaboratory.Readthepassageagainandanswerthequestions:3.Howcantheymakethereactionquicker?Bymakingthemixturehotter.4.WhatmistakesdidPaulmake?Heusedthewrongliquid.3.Whydidtheteachersendthestudentsoutoftheroom?Becausetheliquidwasacrylamideandthegaswaspoisonous.4.Whatlessondidtheincidentteachthestudentsandtheteacher?Nevertoleaveabottlewithoutalabelinthechemistrylad.Learnthenewwordsbyheart.ReadthepassageAandBandtrytoretellit.镜头再现三种比较句型的转换:1)A+be+fourtimes+比较级+than+B2)A+be+fourtimes+as+adj/adv+as+B3)A+be+fourtimes+the+NofB哪一些词可以来修饰比较级?1)much/rather/abit/alittle/alot/agreatdeal/any/…2)倍数、分数、百分数、小数3)一些名词TheweatherinwinterinBeijingismuchcolderthanthatinShanghai.Thisbookis50%percentmoreexpensivethanthatone.Johnisaheadt