题目内容
（请给出正确答案）
[主观题]
Word-of-mouth advertising is also known as ________.
A．mass marketing
B．one-to-one advertising
C．relationship marketing
D．niche marketing
提问人：网友lixin080108
发布时间：2022-01-07
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A．Tree leaves die of lack of water from acid rain.
B．Spruce growth is accelerated by acid rain.
C．Acid rain kills the microorganisms within the soil.
D．Beech trees suffer more than other trees in acid rain.
