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1、Unit7()ABCD1Someofthesupportgiveninearly(bearlier)unitsislatertakenaway;althoughthebookisnotstructurallygraded,thereisanoverallincreaseinthedifficultyofthetextsandtasks.一些支持了后来单位是早些时候夺去;尽管这本书不是结构分级,有全面提高文本的困难和任务。2Inordertouseyourdictionaryeffective(aeffectively),y
2、oushouldmakeyourselffamiliarwithitsapparatus一thesystemofsymbolsandabbreviationsusedintheentries・为了使你的字典有效,你应该让你熟悉其机器-系统和大量的符号缩写,应征作品。3Itispossibleinthisunittohelpyouunderstandsomeofthefeaturesofthelanguagebetterandillustrate(ctoillustrate)theinformationcontainedin
3、adictionarybygivingexamples.在本单元有可能帮助你理解这些语言的功能更好,来说明在字典中所包含的信息给的例了。4Asyouincreaseyourunderstandingofthelanguageandyourskillinusingadictionary,youwillfeelgreaterconfidenceandlearnwell.(dbetter)当你增加你的理解语言和技巧,你在使用字典,你会感觉更大的信心和学习得更好。1Ourfirstexperimentillustratingexp
4、ansionthroughheat(arequires)isrequiredtheapparatusbeforeus:aringonametalstand,ametalballandaBunsenburner.我们的第一个实验说明扩大到热要求仪器在我们面前:一枚戒指于一个金属站、金属球和煤气灯。2Sincetheringhasremaineduntouchedbytheheat,wemustconcludethattheballisincreased(chasincreased)involume,thatistosay,i
5、thasexpanded・因为这枚戒指一直未受热,我们必须断定,那个球量的增加,也就是说,它已经扩大。3Whenattempt(aWhenanattempt)wasthenmadetopasstheheatedballthroughthering,itwasfoundthatitwouldnotgothrough.当试图通过加热,然后球通过只戒指,它被发现了,它不会通过去。4Musicalinstrumentscanbedividedintotwobasicgroups:thosewhichareplayedwiththe
6、handsalone,andthose(dforwhich)whichbothhandsandmouthareneeded・乐器可分为两种基本组:那些的播放孤单,用手的双手和嘴巴是必要的。5Thesharpriseinthepriceofoiloverthelastdecadehasbeenunpleasantbutinthelongrunitisbeneficial,partlyit(cpartlybecauseit)discourageswasteandpartlybecauseithasforcedmanynatio
7、nstoseekwaysofdevelopingbetterandmorepermanentsourcesofenergy.急剧增长的石油的价格在过去的十年里已经不愉快的但从长远来看,这是有好处的,部分原因是它分散了人们的浪费,部分原因是因为它c经迫使许多国家寻找发展更好、更持久的能源。1Inwhatfollowing(afollows),theearlierdistinctions,ratherthanthisone,willbeassumedwhencomparingdifferentenergysources.在下文
8、中的越早,而不是殊荣,并承担这一领域的在比较不同的能源。A部分1Nowadays,theATMmachineisverypopularbecausepeoplecangetmoneyalmostinstantaneouslywhenthecodenumberisputin.如今,ATM机中很受欢迎,因为