【题目】 to the Internet, as some adolescents do, will to some extent affect their private lives.
A. To be addicted B. Having been addicted
C. Addicted D. Being addicted
在线课程【答案】D
【解析】
考查动名词做主语。句意：就像多数的青少年一样，沉迷于网络在某种程度上对他们的身心健康是有影响的。be addicted to沉迷于---，根据句意可知此处是动名词短语做主语，故答案为D。