问答题

The largest sector in American goods and service production is
A．agriculture.
B．manufacturing.
C．service.
D．communications industry.

A.agriculture.
B．manufacturing.
C．service.
D．communications
B.

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D．the Congress.

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B.
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D.
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E.

The distinction between parole and langue was made by

A.Halliday.
B．Chomsky.
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