At the age of 2, a child will typically have a vocabulary of ...

[daltonest1984]

At the age of 2, a child will typically have a vocabulary of ______ words and be able to say sentences ______ words in length.
 
  50100; 23
  5,00010,000; 1012
  100200; 520
  1002,000; 26

Question 2

A critical-period view of language learning refers to
 
  the sensitive time for prefrontal cortex development.
  the only time language can be learned.
  the best time to learn a language.
  second-language acquisition.

[JYan]

Answer to Question 1

1002,000; 26

Answer to Question 2

the only time language can be learned.

[daltonest1984]

Thanks for the timely response, appreciate it

[kishoreddi]

Great answer, keep it coming