2015职称英语理工类新增教材

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1、2015职称英语理工类新增5篇旧文章新增文章理工C阅读理解第九篇：EgyptFelledbyFamine第九篇：AnEssentialScientificProcess补全短文第五篇：TheMagicofSound第五篇：ARecord-BreakingRover理工B阅读理解第二十二篇：Snowflakes第二十二篇：Real-WorldRobots补全短文第九篇：HeatIsKiller第九篇：LighteningStrikes理工A补全短文第十三篇：SleepingGiant第十三篇：AffectionateAndroids理工C阅读理解新增文章第九篇          

2、              AnEssentialScientificProcessAlllifeontheearthdependsupongreenplants.Usingsunlight,theplantsproducetheirownfood.Thenanimalsfeedupontheplants.Theytakeinthenutrientstheplantshavemadeandstored.Butthat’snotall.Sunlightalsohelpsaplantproduceoxygen.Someoftheoxygenisusedbytheplant,buta

3、plantusuallyproducesmoreoxygenthanituses.Theexcessoxygenisnecessaryforanimalsandotherorganismstolive.Theprocessofchanginglightintofoodandoxygeniscalledphotosynthesis.Besideslightenergyfromthesun,plantsalsousewaterandcarbondioxide.Thewatergetstotheplantthroughitsroots.Thecarbondioxideentersth

4、eleavesthroughtinyopeningscalledstomata.Thecarbondioxidetravelstochloroplasts,specialcellsinthebodiesofgreenplants.Thisiswherephotosynthesistakesplace.Chloroplastscontainthechlorophyllsthatgiveplantstheirgreencolor.Thechlorophyllsarethemoleculesthattraplightenergy.Thetrappedlightenergychange

5、swaterandcarbondioxidetoproduceoxygenandasimplesugarcalledglucose.Carbondioxideandoxygenmoveintoandoutofthestomata.Watervaporalsomovesoutofthestomata.Morethan90percentofwateraplanttakesinthroughitsrootsescapesthroughthestomata.Duringthedaytime,thestomataofmostplantsareopen.Thisallowscarbondi

6、oxidetoentertheleavesforphotosynthesis.Asnightfalls,carbondioxideisnotneeded.Thestomataofmostplantsclose.Waterlossstops.Ifphotosynthesisceased,therewouldbelittlefoodorotherorganicmatterontheearth.Mostorganismswoulddisappear.Theearth’satmospherewouldnolongercontainoxygen.Photosynthesisisessen

7、tialforlifeonourplanet.词汇：nutrientn.营养物organismn.生物体，有机体carbondioxiden.二氧化碳chloroplastn.叶绿体moleculen.分子vaporn.水蒸气oxygenn.氧气photosynthesisn.光合作用chlorophylln.叶绿素glucosen.葡萄糖ceasev.停止注释：1．Thenanimalsfeedupontheplants.动物以植物为食。练习：1．Inthefirstparagraph，t