题目

四季分明，气温季节变化明显一般指的是 A．寒带区域                                               B．温带区域 C．热带区域                                               D．寒带与热带区域 答案：BAll his time _______research on Chinese history, he has no time for outdoor activities.A．devoted to doB．devoted to doingC．devoting to doingD．is devoted to doing