题目

 Brad I went to Beijing with my parents on vacation last summer．The weather was fine and the trip was pleasant（令人愉快的）．We spent five days in Beijing．We visited Tian'an Men Square．We also went to the Great Wall and the Palace Museum．Of course, we went shopping．The shops were crowded．We ate in some Chinese restaurants, too．The food was cheap and delicious．The Chinese people were very friendly．We had great fun in Beijing．  Karen I had a vacation with my friends in Hainan Island（海南岛）last winter．The island has beautiful golden（金色的）beaches a把标有“220V40W”和“220V15W”的甲、乙两盏灯串联接在220V电压下，则下面分析正确的是( )A.两盏灯的总功率等于55WB.两盏灯的总功率大于15WC.甲灯的实际功率大于乙灯的实际功率D.乙灯的实际功率大于甲灯的实际功率