灵敏素质可分为（）
A.正常灵敏素质
B.一般灵敏素质
C.专项灵敏素质
D.特殊灵敏素质
参考答案：B, C
The sisters decided to hold a family party to ________ their parents' silver wedding. [ ]
A. celebrate
B. memorize
C. congratulate
D. welcome
