题目内容

Some of our most important emotional expression are in fact universal, but the degrees of expression appropriate to a given situation can differ greatly across cultures.

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Studies of humans and some other primates have found that we pay more attention to neutral faces over faces that signal threats.

Chimpanzee laughter looks not the same as ours for it uses totally different muscle movements.

The fear expression could directly improves survival in potentially dangerous situations.

选择性催化还原脱硝技术(SCR)最佳温度为( )

A. 600~800OC
B. 600~700OC
C. 290~400OC
D. 120~280OC

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