问答题 　　Most of us have an image of a standard English in pronunciation, and very commonly in Great Britain this is " Received Pronunciation", often associated with the public schools and the BBC. Indeed, a pronunciation within this range has great prestige throughout the world, and for English taught as a foreign language it is usually ideal than any other【S1】________ pronunciation. At the same time, it must be remembered that, so far as the English-speaking countries are concerned, this " Received Pronunciation" becomes the status of a "standard" almost only in England. 【S2】________　　Even in England it is difficult to speak about a standard in pronunciation. 【S3】 ________For one thing, pronunciation is infinitely variable, so that even giving the【S4】________will to adopt a single pronunciation, it would be difficult to achieve. The word dance will be pronounced in a dozen ways even by people who do 【S5】________　　not think of themselves as dialect speakers; there is no a sure way of any two【S6】________people saying the same word with precisely the same sound. In this respect, pronunciation much more closely resembles handwriting than spelling. In spelling, there are absolute distinctions which can be learnt and imitated　　with completely precision; one can know at once whether a word is spelt in【S7】________a "standard" way or not. But two persons’ handwriting and pronunciation may both be perfectly intelligent, yet have obvious differences【S8】________without being able to say which is "better" or more "standard". 【S9】________　　Moreover, with the easy and quick communications of modern times encouraging the spread of a " neutral", " normal " pronunciation, the accompanied sociological changes have reduced the prestige of 【S10】_______ Received Pronunciation.《问题》：【S4】