参考答案：B

解析：[听力原文] A recent report finds that the number of working hours in Asia has started to decline. But the economists say that what is needed is not only a reduction in working time, but also more flexibility in working hours. Both businesses and workers would profit if working hours can be adjusted according to demand, allowing workers to better control their days. And, as many economies in the region see a growth in service industries, such as hotels and restaurants, which need flexible work schedules, more flexibility could help boost growth.

[分析]： 观点态度和找寻和判断。 关于经济学家的观点，原文认为But the economists say that what is needed is not only a reduction in working time，but also more flexibility in working hours. 根据上下文逻辑可知，not only 之后的内容承前，指一般性观点，而but also 之后的内容启后，表述经济学家的重要观点。由此可判断，工作时间更有弹性，是该句的中心内容。因此B项内、容与原文意思相符，是正确答案。[解题关键] 1)段首处but之后的内容往往是全段中心内容。2)段落中的中心词，包括其词形变化形式往往频繁出现，如段首中心句中的中心词flexibility 及其形容词 flexible在该段出现若干次。