问题
单项选择题
Which of the following is NOT true about unwanted e-mail
A．It costs money to receive them.
B．It's free to store them.
C．It takes time to access them.
D．It takes time to throw them away.
答案
参考答案：B
解析：[分析] 是非题型。 见第三段第一句：The receipt of unsolicited commercial electronic mail may result in costs to recipients who _____,or for the time spent accessing，reviewing，and discarding such mail，or for both．三个划线部分分别是选项A、C、D的内容，因此只有选项B为答案。