单选题：How long has Mr．Wang been here?

题目内容：

How long has Mr．Wang been here? A．He arrived here three hours ago．
B．He’s been here for an hour．
C．He calTte here haft all hour ago.

参考答案：

答案解析：

硬度不够造成（　　）

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点击开始播放听力mp3:{MP3:http://wximg.233.com/attached/media/20130819/201308191550112811

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