读下图漫画《同价不同票》。漫画中观点的合理性在于①票价应以铁路部门提供服务的价值为基础②无座乘客与有座乘客已享受到同样的服务③无座票与有座票按同价出售违背价值规律④服务性商品的价格应该由其使用价值决定
It's the first time that he has been to Australia，________？
You and I could hardly work together，________？
He must be helping the old man to water the flowers，________？
I told them not everybody could run as fast as you did，________？(2011·重庆)
It was from only a few supplies that she had bought in the village ________ the hostess cooked such a nice dinner.
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