问题
选择题
My younger brother _____ from Zhongshan University in 1993. [ ]
A. set
B. finished
C. graduated
D. entered
答案
答案：C
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My younger brother _____ from Zhongshan University in 1993. [ ]
A. set
B. finished
C. graduated
D. entered
答案：C
在一定条件下，使一定量的A和B反应，达到平衡状态时，具有的性质是[ ]