此次优化训练是针对新人教版的必修2，Unit 3 Computers出的综合练习题。包括单项选择、完型填空，单词拼写、阅读理解题。适用于本单元综合复习
一、单项选择
1. Though different body movements mean different things in different cultures, ______smile is ______ accepted as a sign of happiness or being friendly.
A. the ; universally B. the; usually C. a; globally D. a; universal
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