A-A+ ______pollution control measures are expensive 2022-08-05 19:51:29 问答库 阅读 171 次 问题详情 ______pollution control measures are expensive, many local governments hesitate to adopt them.A.AlthoughB.HoweverC.BecauseD.Moreover 参考答案 正确答案:C解析:连词辨析。 这两个句子是因果关系。