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A
distinguish shapes
B
e sense of human faces
C
feel happy or angry
D
communicate with each other
正确答案 :B
解析
【金标尺解析】根据文章第一段最后一句“Dogs may indeed be able to distinguish between happy and angry human faces, according to a new study.”和第二段第一句“Researchers trained a group of 11 dogs to distinguish between images(图像)of the same person making either a happy or an angry face.”可知,这项研究着重于狗是否能理解人脸上的表情,故本题答案 为 B。
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