问题
选择题
Use your head. nothing taught by others can have the same effect on you as ________learned by yourself．
A．those
B．what
C．that
D．the one
答案
C
that作指示代词，用来代替前文提到的不可数名词，以避免重复。如果前文提到的为可数名词单数或复数，则用one（that），those或ones来代替