单项选择题

The author seems to be wondering ______.

A．what makes up one's adequate working knowledge of English
B．why English can serve so many needs of various people
C．how to relate the technological problems in airport communications
D．when English became so widely used

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单项选择题

There are about 260 million people who can speak ______.

A．English in its regional variety
B．English in its standard variety
C．English as a second language
D．English as a working language

单项选择题

These countries in Line 7, Para. 3, most probably refers to ______.

A．the developing countries which used to be colonies
B．the former British colonies which now are developing
C．the colonized countries which become as strong as Britain
D．the developing countries which are still colonized by Britain