Advertisers need their numbers if they want to reach teens because A．many organizations or agents reveal teens' numbers for profit. B．phones are interwoven into teens' daily life. C．parents buy teens a cell phone for connection anytime. D．teenagers are prone to being attracted by advertisements.
A.many B. B．phones C. C．parents D. D．teenagers E.
【参考答案】
B 如果广告商想要影响青少年就需要他们的号码，因为[A]许多组织或机构都通过泄露青少年的手机号营利。[B]手机已......