题目内容
字典没有索引的概念。
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字典中的键值对，体现了一种映射关系。
字典中的键，可以是任何数据类型。
字典的add方法，可以将一个新的键值对存入字典中。
Are the following statements true or false according to the passage? Write T / F accordingly:The world is getting more and more mobile! So, it is good for us to learn to say“Hello”in different languages to greet people from different places: Nihao in Chinese, Hola in Spanish, Ciao in Italian, Bonjour in French. It sounds hard to learn to say so many“Hellos”. But don't worry! You can find some other ways to greet people, too.A friend of mine who travels widely does not say“Hello”, but she tries to learn to say “Beautiful”in the local language. She can use it to“greet a mother holding a baby, or to “greet”an old lady watering her flowers, or to“greet” a lonely salesman showing a photo of his family. The ability has earned her friendship all over the world. So why not — when even one word can bring about such pleasure?Fun, isn't it? And we don't need to pronounce those different local greeting words accurately. With a hearty smile, it can be well understood and appreciated. The “Beautiful”greeting is like sunlight that melts the coldness between people. So instead of complaining about a foreigner’s misunderstanding and unfriendliness, let's learn to say“Beautiful in the local language whenever and wherever you travel around the globe!(1) It is good to learn to say“Hello”in different languages because more people move around in the world.
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