A smile can be observed, described, and reliably identify; it can also be elicited and manipulated under experimental conditions

Câu hỏi :

A smile can be observed, described, and reliably identify; it can also be elicited and manipulated under experimental conditions

A experimental           

B smile                          

C conditions

D identify

* Đáp án

D

* Hướng dẫn giải

Phương pháp giải:

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