The case of Genie shows that______.
A、language cannot be acquired at all after the critical period
B、cerebral plasticity after puberty is still high enough to for a successful mastery of a new language
C、the language faculty of an average human degenerates after the critical period
D、the language learning should be done as early as possible
【正确答案】：C
【题目解析】：The case of Genie shows that the language faculty of an average human degenerates after the critical period.