问题
单项选择题
______ pollution control measures are expensive, many local governments hesitate to adopt them.
A．Although
B．However
C．Because
D．Moreover
答案
参考答案：C
解析：[分析] 连词辨析。 这两个句子是因果关系。
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______ pollution control measures are expensive, many local governments hesitate to adopt them.
A．Although
B．However
C．Because
D．Moreover
参考答案：C
解析：[分析] 连词辨析。 这两个句子是因果关系。