参考答案

正确答案：C
解析：细节题型见最后一句：The Crusades were partly responsible for the further expansion and improvement of the sugar industry and for interesting Europeans in the use of sugar. 十字军东侵是造成糖业进一步扩展和使欧洲人对糖产生兴趣的部分原因。因此答案为C。