求阅读理解标准答案,..The number of speakers of English in Shakerspear

求阅读理解标准答案,..The number of speakers of English in Shakerspear’s time...
The number of speakers of English in Shakerspear’s time is estimated to be have been about five millon.Today it is eatimeted that some 260 million people speak it as a native language,mainly in the United States,Canada,Great Britain,Ireland,South Africa,Australia and New Zealand.In addition to the standard varieties of English found in these areas,there are a great many regional and social varieties of the language as well as varies levels of usege that are employed both in its spoken and written forms.
1.What would be the best title for this passage?
A.The Difficulties of Learning English
B.International Communications
C.The Standard Varieties of English
D.English as a World Language
In fact,it is impossible to estimate the number of people in the world who have acquired an adequate(足够的) working knowledge of English in addition to their own languages.The purpose for English learning and the situations in which such learning takes place are so varied that it is difficult to explain and still more difficult to judge what forms an adequate working knowledge for each situation.The main reason for the widespread demand for English is its present-day importance as a world language.Besides serving the indefinite needs of its native speakers,English is a language in which some of important works in science,technology,and other fields are being produced,and not always by native speakers.It is widely used for such purposes as meteorological and airport communications,international conferences,and the spread of information over the radio and television networks of many nations.

如果只有这一段话的话只能选择a或者D,都是在某一方面贴近.但是都不完全,如果还有其他乔恩字,希望能上传完整.
再问： It is a language of wider communication for a number of developing countries, especially former British colonies.问题我补充完了，还有一句太长输入不下了，你现在帮忙看下选什么，谢谢