[单选题]43.Butascasesofthevirusspreadandmultiply,callsforclosingVocabularyBuildingbordershavegrownlouder,mostpredictablyfromthefarrightandpopulistswhowereneverfansofthebloc’sopenborderpolicy.Humanrightsgroupsarecalling__thereleaseofpoliticalprisoners.

A
out
B
for
C
over
D
in
正确答案:B
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