A:Val(Mid(s,5,1))Mod 2 = 1
B:Val(Mid(s,5,1))Mod 2 = 0
C:Val(Mid(s,5,1))\ 2 = 1
D:Val(Mid(s,5,1))\ 2 = 0
You don't need ____ (go) to school.
选择适当的应答语( )
将胃液的pH值从10降到2的过程中,胃液中胃蛋白酶的活性变化是( )