英语翻译Theearlyuniversecontainedonlythelightestelements,hydrogenandhelium.Heavierelements,suchascarbon,formonlyinnuclearreactionsinstarsandaredispersedwhenthestarsexplode.Arecentlydiscoveredgascloudcontainedcarbon

　　英语翻译

　　Theearlyuniversecontainedonlythelightestelements,hydrogenandhelium.Heavierelements,suchascarbon,formonlyinnuclearreactionsinstarsandaredispersedwhenthestarsexplode.Arecentlydiscoveredgascloudcontainedcarbonseveralbillionyearsago,whentheuniversewasnomorethantwobillionyearsold.

　　Ifthestatementsabovearetrue,whichofthefollowingmust,onthebasisofthem,alsobetrue?

　　（A）Theearlieststarscontainedonlyhydrogen.

　　（B）Somestarswereformedbeforetheuniversewastwobillionyearsold.

　　（C）Thecarboninthegascloudlaterformedpartofsomestars.

　　（D）Nostarsidentifiedtodateareasoldasthegascloud.

　　（E）Thegascloudalsocontainedhydrogenandhelium.