Whenyouheartheword"farm",chancesareyoupicturerollinghillsinthecountrycoveredwithcowsandcornstalks.Butsomescientists,engineersandcityplannerssaythefarmsofthefuturecouldrisestraightintotheair-inskyscrapersintheworld'smostpopulatedcities.
Thoseintheknowsaybringingfarmingindoorssolvesanumberofproblems.First,traditionalfarmingtakesupalotofland,whilecitiesthatgrowtheirownfoodwouldbecomemoreself-reliant,andlessvulnerabletocatastrophessuchashurricanes.Totopitoff,bytheyear2050,theworldpopulationwillgrowbyanother3billion.Aspopulationsgrow,thelandavailableforfarmingshrinks,raisinganimportantquestion:wherewillwegrowthefoodforallthesepeople?Scientistssay"verticalfarming"-growingcropsinskyscraperstensofstorieshigh-istheanswer.
Butthosefamiliarwiththehurdlesofgrowingcropsindoorssayit'snotgoingtobeeasytomakethetransitiontoverticalfarming.Itcanbetrickytoregulateclimateconditionsindoors.Maintainingthecorrectbalanceofhumiditycanbeespeciallychallenging.Mimickingsunlightistooexpensiveforwidespreaduseyet.
That'snot tosay thesechallengeswon't beover-come-butitwilltaketime.Mostexpertssuggestitwouldbeanywherebetween5and15yearsbeforethefirstverticalfarmscouldbecreated.
當(dāng)你聽(tīng)到“農(nóng)莊”這個(gè)詞時(shí),很可能你腦子里想象到的是鄉(xiāng)下那些遍地牛羊和谷物的連綿起伏的山崗。但有些科學(xué)家、工程師和城市規(guī)劃師說(shuō),未來(lái)的農(nóng)莊有可能會(huì)直接向空中伸展——坐落在世界上人口最多的城市的摩天大樓里。
知情人士稱把種植業(yè)引進(jìn)室內(nèi)可以解決許多問(wèn)題。首先,傳統(tǒng)的種植業(yè)占用大量土地,而能自行種植食物的城市更可實(shí)現(xiàn)自給自足,且較少受到災(zāi)難(如颶風(fēng))的影響。加之,到2050年世界人口將再增加30億。隨著人口的增加,可耕地越來(lái)越少,這就產(chǎn)生了一個(gè)嚴(yán)重問(wèn)題:我們將在什么地方為這些人種植食物呢?科學(xué)家們認(rèn)為,答案是“垂直種植”——把作物種在幾十層樓高的摩天大樓里。
但熟知室內(nèi)種植莊稼困難的人士卻認(rèn)為,過(guò)渡到垂直種植并不是一件容易的事。調(diào)節(jié)室內(nèi)的氣候條件相當(dāng)困難,保持室內(nèi)適當(dāng)?shù)臐穸扔葹椴灰祝M陽(yáng)光的代價(jià)則太大了,還不適合推廣。
這并不意味著這些困難就不能被克服——但要克服它們還需要時(shí)間。多數(shù)專家認(rèn)為要建立起第一座垂直農(nóng)莊還需要5到15年的時(shí)間。
(翻譯時(shí)請(qǐng)注意斜體字的譯法)
GlobalTemperaturesFourthHighestonRecord
AccordingtoNOAA(NationalOceanicandAtmosphericAdministration美國(guó)國(guó)家海洋和大氣局)scientists,thegloballyaveraged(1)t forJune2012markedthefourthwarmestJunesincerecordkeepingbeganin1880.Thecombinedaveragetemperatureovergloballandandoceansurfaceswas61.03°F,1.13°Fabovethe20th(2)c average.June2012alsomarksthe36thconsecutiveJuneand328thconsecutivemonthwithaglobaltemperatureabovethe20thcenturyaverage.Thelastbelow-averagetemperatureJunewasJune1976andthelastbelow-averagetemperature(3)m wasFebruary1985.
Mostareasoftheworldexperiencedmuchabove-averagemonthlytemperatures,includingmostofNorthAmericaandEurasia(歐亞大陸),and(A)n Africa.OnlyAustralia,northernandwesternEurope,andthenorthwesternUnitedStateswerenotablycoolerthan(B)a Austriarecordedits(C)h everJunetemperatureof99.9°FonJune30.ThemonthlytemperatureduringJuneintheUnitedKingdomwas0.5°Fbelowthe1971~2000average,makingthisthecoolestJunesince1991.Australiaalsoremained(D)c thanaverageduetothelingeringeffectsofLaNi?a(拉尼娜現(xiàn)象).
Fortheocean,theJuneglobalsea(4)s temperaturewas0.85°Fabovethe20thcenturyaverageof61.5°F,the10thwarmestJuneon(E)r .AccordingtoNOAA'sClimatePredictionCenter,thereisanincreasedchancethatElNi?oconditionswillemergebeginninginJuly-September2012.ElNi?oisoften,butnotalways,associatedwith(5)g
temperaturesthatarehigherthantemperaturesintheneutralandLaNi?aphases.
(A,B,C,D,EFORCROSS,1,2,3,4,5FORDOWN.Thefirstlettersoftheabsentsweregiven)
Divisiblefrom1to9
Findanumberconsistingof9digitsinwhicheachofthedigitsfrom1to9appearsonlyonce.Thisnumbershouldsatisfythefollowingrequirements:
a.Thenumbershouldbedivisibleby9.
b.Ifthemostrightdigitisremoved,theremainingnumbershouldbedivisibleby8.
c.Ifthenagainthemostrightdigitisremoved,theremainingnumbershouldbedivisibleby7.
d.etc.untilthelastremainingnumberofonedigitwhichshouldbedivisibleby1.
上期答案
上期ReadingComprehension答案
1.D 2.D 3.C
上期Crossword答案
1.repair 2.passive 3.adapts 4.cell
A.essential B.conditions C.healthy D.effect
上期Illation答案
Thepeoplewhowentfishing,weregrandfather,fatherandson.Thenthereweretwofathersandtwosons.