家住北京的小明在寒假随旅游团到澳大利亚进行了一次旅游。他在回来后的记录中写下了这次旅游经历,请你帮他分析哪些是错误的。

2013年1月28日1点,我们乘飞机经11个小时的飞行到达了澳大利亚最大的城市,就是首都堪培拉(150°E附近),当地时间正好是14点,我看到太阳正位于北方。下午,我们在堪培拉城市的海滩上玩耍了一下午,晚上,我们在悉尼歌剧院欣赏了著名的歌剧表演。第二天,我们到了西南部城市珀斯,那里的天气和北京一样寒冷干燥。在珀斯,当地的牧民说:“我们国家是世界上养羊最多的国家,但我们吃的牛肉都是从国外进口的。”最后,我们到达了澳大利亚第二大城市悉尼,从悉尼乘船回国。在途中观赏了澳大利亚美丽的珊瑚礁群。

    One day an American called Simon went to London to visit his friend, Rick. Rick told him that his flat was on the first floor. When he arrived, Simon went straight to the first floor of the building. But he was told that there was no Rick on that floor. Do you know why?

    In fact, the British call the first floor of a building the ground floor. The floor above the ground floor is the first floor, while Americans would call it the second floor.

    The story shows that there are a few culture differences between Britain and America, though the British and Americans both speak English.

    The British usually hide their feelings. They seldom start a conversation with strangers. For example, on the train the British often spend their time reading newspapers or books. But Americans are quite different. They're more active and easier to talk with.

    The British and Americans may use different terms for many things. The British usually use “football”, “eraser” and “mail” while Americans prefer to use “soccer”, “rubber” and “post”.

设N_A为阿伏加德罗常数的值，下列与N_A有关的说法正确的是（   ）