A. 范围广,定位准 B. 大大扩展了商家的网上销售渠道 C. 创造了流量转化为收益的机会 D. 按效果付费,节约广告主的广告费用
A. 对 B. 错
A. You're all right? B. Give my regards to your parents. C. How’s everything with you? D. Not bad