参考答案

正确答案：C
解析：本题问“从短文中可以了解到什么”。短文第二段中提到Jim Brown的观点“‘It's becoming harder and harder for these firms to grow，’said Jim Brown，a professor of marketing at Virginia Tech University．‘I think in the United States fast food has reached a saturation point because of the number of competitors and the number of outlets．”’他认为这些公司的发展很困难，美国的快餐业已经达到饱和状态。也就是说他对快餐业并不看好。因此C“Jim Brown对美国快餐业持不乐观的态度”正确。