In which way could a craft-beer brewer attract customers? ( )

参考解析：

细节题。根据题干关键词：craft-beer brewer和attract定位原文第二段后半部分：Since craft brewers use about ten times more hops than mega brewers, the trend has been a bonanza for Steinway and the other big hops companies以及That puts pressure on brewers to come up with new beers, which, in turn, leads to a hunt for new hops varieties.由此可知手工啤酒酿制商们要不断寻找不同的啤酒花，生产不同味道的啤酒，以此来招揽顾客。所以正确答案选B。D——频繁更换商标，该项属于曲解了原文的含义。原文提及I.P.A aficionados频繁更换牌子是为了换换口味，所以D错误；C——加入Steinway等大型公司，原文并无提及；A——增加啤酒花的使用量，不够具体，原文强调的更多的是啤酒花的种类，所以A排除。