【题目】Many people are so ______ to Tik Tok （抖音）that they can' t put down their phones.
A.knownB.addictedC.friendlyD.related
在线课程【答案】B
【解析】
考查形容词辨析。句意：许多人如此沉迷于抖音以至于他们放不下手机。be known to为……所知；be addicted to沉溺于；be friendly to对……友好； be related to与……有关。根据they can' t put down their phones可知是沉迷于抖音，故选B。