题目内容

TheUSAnimalWelfareActwaspassinAug 24_______.

A. 1955
B. 1960
C. 1966
D. 1970

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OnDec24 _______,theUSCongressamendstheLaboratoryAnimalWelfareAct(P.L.91-579),renamedtheAnimalWelfareAct,extendingprotectiontoallwarm-bloodedanimalsinlaboratories.

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