Smiles and frowns .
Giải bởi Vietjack
Đáp án đúng là: B
Giải thích:
Dựa vào câu: Studies by Ekman's group have demonstrated that humans share a set of universal emotional expressions that testify to the common biological heritage of the human species. Smiles, for example, signal happiness and frowns indicate sadness on the faces of people [...].
Dịch: Các nghiên cứu của nhóm Ekman đã chứng minh rằng con người có chung một tập hợp các biểu hiện cảm xúc phổ quát minh chứng cho di sản sinh học chung của loài người. Ví dụ, nụ cười là dấu hiệu sự hạnh phúc và những cái cau mày thể hiện nỗi buồn trên khuôn mặt của mọi người [...].
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