阅读理解。
Leadingscientistshavejoinedthegrowingchorusofconcem(worry)aboutgovemmentsandcompanies
rushingintoproducingbiofuels(生物燃料)asasolutionforglobalwarming,sayingthatitcouldbe harmfulif
theydonotconsidert-term influenceofwhattheyaredoingcarefully.
Itisnecessarytobuildstandardsforthesupplysystemofanygreenfuelprojectinordertomakesurethat
therearen'tanysideeffectsontheenvironmentandsocialstructures.Thereportproducedbythescientists
expressesconcemthatmanycompaniesmaynotbefullyawareofthepossibledisadvantages.
Productionofcrops(农作物),suchascomandsoyabeans,hasincreasedgreatlyinthelastfewyearsas
anothereco-friendlychoicetonaturalfuels,butenvironmentalandhumanrightsmovementleadersareworried
thatthiswillleadtodestruction(破坏)ofrainforests.Foodpricescouldalsogoupasthereisincreasing
competitionforcropsasbothfoodandsourcesoffuels.Lastweek,theUNwamedthatbiofuelscouldhave
eroussideeffectsandsaidthatstepsneedtobetakentomakesurethatlandchosentogrowbiofuels
doesnotdamagetheenvironmentorsocialstructures.Thereisalreadygreatconcemaboutpalmoil(棕榈油),whichisusedinmanyfoodsinadditiontobeinganimportantbiofuel,asrainforestsarebeingclearedin
somecountriesandpeopledrivenfrom theirhomestoplantmorepalms.
Thereportsuggeststhatbiofuelsarenotasolutionforclimatechangebuttheycanplaytheirptutaslong
asgovemmentsandcompaniesmanagethesocialandenvironmentinfluencethoroughly.Thereshouldalsobe
greatermeasures(措施)takentoincreasetheeffectivenessandtoreduceneeds.
1. Theunderlinedphrase'sideeffects'probablymeans_____.
A.improvingconditions
B．unwantedresults
C.increasinginfluences
D.unchangedadvantages
2. Thethirdparagraphismainlyabout____.
A.theerofrainforests
B.thewaminggivenbytheUN
C.thegreenbiofuelslikedbypeople
D.thepossibledisadvantagesofbiofuels
3. Whatcanweinferfromthepassage?
A.Thedevelopmentofbiofuelswillprobablyinfluencepeople'sdailylife.
B.Greatermeasuresshouldbetakentoreducetheamountofbiofuels.
C.Almostallthecompaniesareworriedaboutthefutureofbiofuels.
D.Rainforestsarebeingclearedtogrowmorepalmsasbiofuels.