下列关于如何使用Notification，不对的是（）
A.notification需要NotificatinManager来管理
B.使用NotificationManager的notify方法显示notification消息
C.在显示Notification时可以设置通知时的默认发声，震动等
D.调用Notification对象中的方法可以清除消息
参考答案：D
根据对话情景和内容，从对话后所给的选项中选出能填入空白处的最佳选项。选项中有两个为多余选项（注意：如选E在答题卡中涂黑AB;如选F在答题卡中涂黑AC;如选G在答题卡中涂黑AD;） M: Remember Paul from our old school? w: 小题1: M:I met him at the checkout．n the supermarket the other day, and he was queuing right in front of me． w: 小题2:___ M: Well, he started out as a manager in charge of sales．____小题3:__ He teaches commercial English there. W: Why did he get this new job? 小题4: M: Yes．It is tiring, though． After all, he has got a family to take care of W:I see．____小题5: __ M: Exactly!
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