Which of the following answers are human facial expressions that represent emotional state? A: anger, disgust, surprise, fear B: anger, frown, surprise, fear C: frown, fear, blink, disgust D: frown, blink, disgust, surprise

He admitted, with a.........................(puzzle)frown, that he didn't understand a word of the speech.

‍Most institutions of higher learning frown on “block quotes” or quotes of 60 words or more. ‍

Which one of the following expressions means "不屑"？ A: laugh at B: point at C: frown at D: sniff at

I noticed a slight ______ of disagreement on his face. A: nodding B: wink C: frown D: complexion

(单选) Which one of the following expressions means "不屑"？ A: laugh at B: point at C: frown at D: sniff at

Many teachers frown on such practices. A: disagree<br/>with B: agree with C: delight<br/>with D: please<br/>with

You can travel _____, but children under five travel ____. A: freely … free B: free … freely C: free … free D: freely … freely

In a “first-best” world：（ ） A: Free trade is not optimal. B: Free trade is economically efficient. C: Free trade benefits everyone. D: Free trade harms everyone.

In some countries, newspapers _____ government control, and different political views can be seen in them. A: feel free from B: feel free to C: are free from D: are free to