WiFialsohasaplaceint的精选

问题详情：WiFialsohasaplaceintechnologieslike5GandCBRS，which       bytheyear2020.A．willbewidelyusedB．willhavebeenwidelyusedC．usedD．isused【回答】B【解析】【分析】【详解】考查动词时态语态。句意：WiFi在5G...