题目

 “I never did hate the Yankees （北方佬）. All that I hated was the war...” That’s how my great-aunt Bettie began her story. I heard it many times as a child, whenever my family visited Aunt Bettie in the old house in Berryville,Virginia. Bettie Van Metre had good reason to hate the Civil War. Her brother was killed at Gettysburg, and her husband, James, a Confederate （南方联盟军） officer, was taken prisoner and sent to an unknown prison camp somewhere.  One day in late September, Dick came to Bettie reporting that he had found a wounded Union soldier in a farmhous电能是使用最方便的能源，以下几种发电方式中会对大气造成污染的是（　　）A.风力发电B.水力发电C.火力发电D.太阳能发电