第27题: [单项选择]The advertisement for Super Suds detergent ______ that the sale has increased by 25% in the first quarter of the year. A. have been so successful B. had been so successful C. has been so successful D. will be so successful 参考答案:C 答案解析:句意:Super Suds 消毒剂的广告是如此成功,以至于今年第一季度的销量增加了25%。本句从句采用了现在完成时态,所以主句应该采用现在完成时态,强调对现在产生的结果和影响。