What can be drawn safely from the case of Genie is that______.()

What can be drawn safely from the case of Genie is that______.()
A、it confirms the critical period hypothesis
B、human's language acquisition device is independent of other intellectual abilities
C、language can not be acquired at all after the critical period
D、the language faculty of an average human degenerates after the critical period and consequently, most linguistic skills cannot develop
【正确答案】：D
【题目解析】：(P224)解析:目前我们从吉尼案例中所能够暂时得出的一个较有把握的结论是，普通人的语言能力在关键期之后会退化,其结果是许多语言技能就很难再开发出来了。