— Do you know Alice well?
— Yes. I know ______ well. [ ]
A. she
B. his
C. her
D. their
答案:C
属β肾上腺能受体阻滞药()
A.毛果芸香碱
B.地匹福林
C.噻吗洛尔
D.乙酰唑胺
简述维果茨基的“最近发展区”理论。