The need to protect national languages is, for most western Europeans, a recent phenomenon—especially the need to ensure that English does not unnecessarily take over too many fields. Public communication, education and new ways of communication promoted by technology, may be key fields to defend.

　　20．Neville Alexander believes that ________.

　　A．mother­tongue education is not practiced in all African countries

　　B．globalization has resulted in the economic failure of Africa

　　C．globalization has led to the rise of multi­language trend

　　D．lack of mother­tongue education can lead to economic failure

　　21．The underlined word “futile” (in Paragraph 2) most probably means “________”.

　　A．workable

　　B．practical

　　C．useless

　　D．unnecessary

　　22．Why do many English­speaking countries not support the language protection efforts described in the passage?

　　A．They have a long history of taking words from other languages.

　　B．They want their language to spread to other countries.

　　C．They think language protection laws are ineffective.

　　D．It reduces a language's ability to acquire international importance.

　　23．What can we infer from the last paragraph?

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