In the original test，all the animals in a test group are given a substance _______ half of them die
A、unlessB
本題考查詞義辨析。until：直到。符合句意，表示givenasubstance持續到halfofthemdie。
In1950,()wasawardedtheNobelPrizefortheanti-racistIntruderintheDust.
()isgenerallyregardedastheforerunnerofthe20th—century“stream—of—consciousness”novelsandthefounderofpsychologicalrealism.
Likeallnaturalists,()wasrestrainedfromfindingasolutiontothesocialproblemsthatappearedinhisnovelsandaccordinglyalmostallhisworkshavetragicendings.
Which of the following statements is NOT true of Emily Dickinson and her poetry?
In Death in the Afternoon( )presents his philosophy about life and death through the depiction of the bullfight as a kind of microcosmic tragedy.
