单选题 This method, ______in the area near Shanghai, resulted in a market rise in total production.

【正确答案】 B
【答案解析】[解题指要] 该题测试过去分词短语用作定语的用法。tried相当于定语从句which was tried。A选项trying后缺少宾语，C选项和D选项则会造成动词重叠，或之间缺少必要的连词，故不用。