单选题
China's rapid development in the telecom industry has played a/an ______ role on the w0orld telecom industry.
【正确答案】
B
【答案解析】第一段中提到：“China's rapid development has...on the world telecom industry"，中国的快速发展对世界电信产业有相当大的影响。play an important role on ...“在……方面起重要作用”。