题目

阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出最佳选项。 A girl used to turn her cell phone off and put it by her photo on the desk every night before going to bed. This habit has been with her ever since she the cellphone. The girl had a boyfriend .When they couldn’t ,they would either call or send messages to each other.They both liked the type of. One night the boy really the girl. When he called her, however ,the girl’s cell phone was off because she was already. The next day , the boy asked the girl to her cell- phone on at night, because wh在下图中画射线OC、OD，使∠COA、∠DOB都与∠AOB互补．