互联网时代出现了这样一群人，他们富有社会责任心和爱心，眼界开阔，留意生活中的点点滴滴，从中取社会“热点”，用手机、数码相机或数码摄像机等数码设备拍下图像或视频，用来表达对百姓生活和人文历史的理解与思考，然后以发彩信或电子邮件的方式，上传到网络分享、传播。他们被称作“拍客”，不需要高超的摄影技术，妇孺皆可，老少皆宜。

先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。

    Henry comes from America．He likes1 a lot．He's visited many2．Last summer,he went to India，a county3a long history.During the trip there，he met something4from his culture(文化)．

    One day,he wanted to visit a palace．He went out of the hotel and5a taxi.When he told the driver and palace's name，the Indian6his head．Henry said

    again and the driver shook his head again．Henry,of course，got7．"Why did you always refuse (拒绝)me?"he shouted．"Please drive me to the palace'"The driver answered"Yes．sir!"and shook his8again．The taxi started and Henry didn't say a word．He9it，and then he said to himself,"I see, 'shaking the head' means'10 'here."

以下属于匀速直线运动的是（  ）