问题
单项选择题
A．Their competitors have long been advertising on TV.
B．TV commercials are less expensive.
C．Advertising in newspapers alone is not sufficient.
D．TV commercials attract more investments.
答案
参考答案：C
解析：[听力原文]
Why does the woman suggest advertising on TV
对话这样提到“…it’s just not enough any more．”C项“只在报纸上打广告不足以起作用”符合对话内容，所以正确。