参考答案

正确答案：B
解析：本题是细节题。由第二段中第一句“not just for reasons of practicality”可知A错。由“it forces you to... intellectual system”可知B对。由“I fear that... continue to decline”可知“Time... has been declined.”故C错。最后一句主要说“Learning another language well is more taxing than, say, learning to play chess well”，并非要在learning language上花费比playing chess更多的时间，故D错。