In the text below some words are missing. Drag words from the box below to the appropriate place in the text. To undo an answer choice, drag the word back to the box below the text.
下面的文本缺了一些词。请把词框里的词拖到文中合适的位置；要撤销选择，把词拖回文本下方的词框即可。
What is a country, and how is a country defined? When people ask how many countries there are in the world, they expect a simple answer. After all, we've explored the ; we have international travel, satellite navigation and plenty of global organizations like the United Nations, so we should really know how many countries there are! However, the answer to the question varies according to whom you ask. people say there are 192 countries, but others point out that there could be more like 260 of them. why isn't there a straightforward answer? The problem because there isn't a universally agreed definition of 'country' and because, for political reasons, some countries it convenient to recognize or not recognize countries.
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