题目

 —When did you live in Beijing, Mary?    — I lived there____ 2008 to 2013. A. on                   B. from                   C. for                  D. of 答案： B在人类进化的过程中发生的显著变化是（??? ）A.后肢粗壮　B.奔跑飞快?? C.脑容量增加 ? D.群居生活