A、Bantu. B、Hausa. C、Swahili. D、Zulu. A细节题。讲座中提到，班图语包括了非洲中部和南部使用的大多数的语言种类：Bantuincludes most of the language spoken in central an

Good morning everyone. Today I’m going to talk about some large language families. I’ll begin my talk with two questions. Do you know how many languages are used throughout the world today? How many major language families are there? OK, I’ll give you a brief introduction about the language families.
    (23)There are more than 3,000 languages used throughout the world today. Almost all of these languages belong to a much smaller number of language families. All of the languages within a language family are related and all of then have a similar history. Therefore the grammar, vocabulary, and sounds of related languages are similar. In addition, the way of thinking and the style of talking among related languages are similar.
   Even though there are over 3,000 languages that are used today. There are only about 20 to 30 major language families.
   Let’s take a brief look at some of the largest language families. Each of these large families includes many individual languages.
   The language that we are using now is English. Aw everybody knows. English has become a world language because of its establishment as a mother tongue outside England. It’s spoken by 320 million people. English is a member of the Indo European language family. This large language family includes most of the languages that are spoken throughout Europe, languages such as English, French and Greek. Of course, nowadays many Indo European languages are spoken in other parts of the world. For instance, Spanish, which is an Indo European language, is spoken throughout South and Central America. But originally it was spoken only in Europe.
   Another language family is the Afro Asiatic family. I’ll spell it, A-F-R-O, A-S-I-A-T-I-C. The Afro-Asiatic family includes most languages in the area of North Africa. Languages such as Arabic, which is spoken throughout the Middle East and many of the local languages of the Sahara Desert region such as Hausa are members of the same family.
   Another large family is Bantu, B-A-N-T-U.(24)Bantu includes most of the language spoken in central-and southern Africa. Languages such as Swahili, which has millions of speakers, and smaller languages, such as Zulu, which has close total hundred thousand speakers, belong to the Bantu family. There are over 250 members of this family.
   In the past few hundred years, there has been a great deal of change in Africa, and outside languages, such as French, are now spoken m some areas of central Africa and southern Africa.
   A fourth large group of languages is the Sino-Tibetan Family. Sino-Tibetan includes all dialects of Chinese, which is perhaps the most widely used language in the world. There are nearly 800 million speakers of Chinese dialers. Sino-Tibetan also includes the languages of Southeast Asia, languages such as Vietnamese and Thai. Of course, not all the languages of East Asia belong to this family.(25)Some languages such as Japanese seem to be completely unrelated to the Sino-Tibetan family.
Now listen to the following recording and answer questions 23 to 25.
23. How many languages are used throughout the world today?
24. What is a large language family including most of the language spoken in central and South Africa?
25. Which is unrelated to the Sino-Tibetan family in the following languages?