题目内容：
请根据短文内容，回答题。What do we mean by a perfect English pronunciation．9 In one ____51____ there are as many different kinds of English as there are speakers of it． ____52____ two speakers speak in exactly the same way．We can always hear differences ____53____ them，and the pronunciation of English varies a great deal in different geographical areas．How do we decide what sort of English to use as a ____54____．This is not a question that can be ____55____ in the same way for all foreign learners of English．If you live in a part of the world like India or West Africa，where there is a long ____56____ of speaking English for general communication purpose，you should select to acquire a good Variety。f the pronunciation of this area． It would be mistake in these circumstances to use as a model BBC English or anything of the sort．On the other hand，if you live in a country ____57____ there is no traditional use of English，
You must take ____58____ your model some form of practical English pronunciation．It does not ____59____ very much which form you choose．The most ____60____ way is to take as your model the sort of English you can hear most often．
_________ A．meaning
B．sense
C．case
D．situation
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