When did the chilren similar on levels of language development?

Câu hỏi :

When did the chilren similar on levels of language development?

A at the middle of the study    

B at the end of the study

C at the beginning of the age   

D at the beginning of the study

* Đáp án

D

* Hướng dẫn giải

Phương pháp giải:

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