Unfortunately, women were not admitted to university in the past, , nowadays, they have got equal rights.
A. while
B. when
C. as
D. since
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(答案→)A. while
B. when
C. as
D. since
解析：句意：不幸的是，妇女在过去不能上大学，而现在她们有同等的权力。While当…时候，虽然，然而，when当…时候，as正如，既然，随着，since自从，所以选A。