Harvardresearchershavecreatedatoughlow-costbiodegradable(可生物降解的)materialinspiredbyinsects’hardoutershells.Thematerial’sinventorssayithasanumberofpossibleusesandsomedaycouldprovideamoreenvironm
Harvardresearchershavecreatedatoughlow-costbiodegradable(可生物降解的)materialinspiredbyinsects’hardoutershells.Thematerial’sinventorssayithasanumberofpossibleusesandsomedaycouldprovideamoreenvironmentallyfriendlyalternative(替代物)toplastic.Thematerialmadefromshrimp(虾)shellsandproteinsproducedfromsilkiscalled“shrilk”.Itisthinclearflexibleandstrong.
Amajorbenefitofthematerialisitsbiodegradability.Plastic’stoughnessandflexibilityrepresentedarevolutioninmaterialsscienceduringthe1950sand1960s.Decadeslaterhoweverplastic’sverydurability(耐用性)israisingquestionsabouthowappropriateitisforone-timeproductssuchasplasticbagsorshort-livedconsumergoodsusedinthehomeforafewyearsandthencastintoalandfill（垃圾池）wheretheywilldegradeforcenturies.Whatisthepointofmakingsomethingthatlasts1000years?
Shrilkhasgreatpotentialtheinventorssaid.Materialsfromwhichitismadeareplentifulinnaturefondineverythingrangingfromshrimpshellsinsectbodiestolivingplantsthatmakesshrilklowcostanditsmassproductionpossibleshoulditbeusedforproductsdemandingalotofmaterial.
Workonshrilkiscontinuinginthelab.Theinventorssaidthematerialbecomesflexiblewhenwetsothey’reexploringwaystouseitinwetenvironments.They’realsodevelopingsimplerproductionprocesseswhichcouldbeusedfornon-medicalproductslikeforcomputercasesandotherproductsinsidethehome.They’reevenexploringcombiningitwithothermaterialslikecarbonfiberstogiveitnewproperties.
1.Paragraph1ofthepassageismainlyaboutshrilk’s______________.
A.remarkabledesign
B.interestingname
C.majorfeatures
D.basicelements
2.Whathasbecomeaconcernaboutplastic?
A.Usingitproperly
B.Producingitcheaply
C.Developingitspropertiesquickly
D.Evaluatingitscontributionsfairly
3.Accordingtotheinventorsshrilkhasgreatpotentialpartlybecause_________.
A.itcanhelpplasticdegrade
B.itcanbefoundinlivingthings
C.itsmassproductionhasbeenrealized
D.itsrawmaterialsare