阅读“七选五”训练
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Facial expressions carry meaning that is determined by situations and relationships. For example, in American the smile is in general an expression of pleasure. 36 A woman’s smile at a police officer does not carry the same meaning as the smile she gives to a young child. 37 It can also hide true feelings. It often causes confusion across cultures. For example, many people in Russia smiling at strangers in public to be unusual and even improper. Yet many Americans smile freely at strangers in public. Some Russians
