Intheoriginaltest，alltheanimalsinatestgrouparegivenasubstance_______halfofthemdie
A、unlessB
本题考查词义辨析。 until：直到。符合句意，表示 given a substance 持续到 half of them die 。
“Thedignityofmovementofanicebergisduetoonlyone-eighthofitbeingabovewater.”This“iceberg”analogyisputforwardby().
In1950,oneoftheleadingAmericanwriters()wasawardedtheNobelPrizefortheanti-racistIntruderintheDust.
TheAdventuresofTomSawyerand,especially,itssequence()provedthemselvestobethemilestoneintheAmericanliterature.
Intheoriginaltest，alltheanimalsinatestgrouparegivenasubstance_______halfofthemdie
EzraPound,aleadingspokesmanofthe“()”,wasoneofthemostimportantpoetsinhistime.
