The main difference between cordless phones and cellphones is that cordless phon

游客2023-07-18  25

问题 The main difference between cordless phones and cellphones is that cordless phones can only operate in a limited range. [br] Although most nations around the world have agreed upon GSM data transmission protocol for cellphones, the US has avoided official ______.

选项

答案 standardization

解析 Although most nations around the world have agreed upon GSM data transmission protocol for cellphones,the US has avoided official ______.解:词汇线索为专有名词GSM data transmission protocol,定位后找到文章倒数第二句,则答案应该是 avoid的宾语,即standardization。
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