题目

阅读理解 阅读下列短文,从每小题所给的A、B、C、D四个选项中选出一个最佳选项。 Bill,Frank and Dave were three brothers.Every year they sent their mother expensive gifts on her birthday.They liked to show her how rich they were. The eldest brother,Bill,had a lot of money and he wanted his mother to have the most expensive gifts,but he didn’t know what to buy.So he put an ad in the newspaper.“Wanted—the greatest gift for my mother.” About a week before his mother’s birthday a man came to his office.He brought a big bird. “This bird,” the man 如图所示，在家庭电路中，螺丝口灯泡的灯座及开关连接正确的是CC