Therearethreeseparatesourcesofdangerinsupplyingenergybynuclearpower(原子能)

Firsttheradioactivematerialmusttravelfromitsplaceofproductiontothepowerstation.Althoughthepowerstationsthemselvesarestronglybuiltthecontainersusedforthetransportofthematerialsarenot.Normallyonlytwomethodsoftransportareinusenamelyroadorrail.Unfortunatelybothofthesemayhaveaneffectonthegeneralpublicsincetheyaresuretopassnearoreventhroughheavilypopulatedareas.

Secondthereistheproblemofwaste.Allnuclearpowerstationsproducewastesthatinmostcaseswillremainradioactiveforthousandsofyears.Itisimpossibletomakethesewastesnon-radioactiveandsotheymustbestoredinoneoftheinconvenientwaysthatscientistshaveinvented.Forexampletheymaybeburiedunderthegroundordroppedintodesertedminesorsunkinthesea.Howeverthesemethodsdonotsolvetheproblemsinceanearthquakecouldeasilybreakthecontainers.

Thirdtheremayoccurthedangerofaleak(泄漏)oranexplosionatthepowerstation.Aswiththeothertwodangersthisisnotverylikelysoitdoesnotprovideaseriousobjectiontothenuclearprogram.Howeveritcanhappen.

Separatelythesethreetypesofdangersarenotagreatcauseforworry.Takentogetherthoughtheprobabilityofdisaster(灾难)isextremelyhigh.

1.WhichofthefollowingisFALSE?

A.Itispossiblethataleakoranexplosionoccursatapowerstation.

B.Itisunusualforradioactivematerialstobetransportedacrossland.

C.Thecontainersarelikelytobebrokenbyanearthquake.

D.Nuclearwastesremaindangerousinmostcasesformanyyears.

2.Theauthorthinksthatthewaystostorenuclearwastesare＿＿＿.

A.easy B.impossible C.reasonable D.ineffective

3.Whatdowelearnfromthelastparagraph?

A.Thepowerstationisasafeplace.

B.Thedangersofnuclearenergycanbeprevented.

C.Thegeneralpublicarestronglyagainstthenuclearprogram.

D.Byitselfnoneofthethreedangersisverylikelytocausemuchworry.

4.Whatisthispassageabout?

A.Usesofnuclearpower.

B.Dangersfromnuclearpo