题干
It is vital to ________ to teenagers the simple fact that ________ the Internet will more or less do harm to both mental and physical health.
A：get across; being addicted to
B：get over; addicted to
C：get through; addicting to
D：get down; addicting themselves to
答案(点此获取答案解析）
A
，若 （ ），则 
的取值范围可以是（ ）