The new China was founded in 1949, great changes have taken place.A. since whenB. after w

发布时间：2020-08-16 15:37:00

The new China was founded in 1949,      great changes have taken place.
A. since when
B. after which
C. in which
D. when

网友回答

(答案→)A. since when
B. after which
C. in which
D. when
解析：考查定语从句。句意：新中国在1949 年建立，从那时候起中国就发生了重大变化。现行词为1949,，从句中缺少时间状语从句。所以选A。
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