A．To show the key role played by air traffic controller-找考题网

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A．To show the key role played by air traffic controllers.
B．To show the great responsibility shouldered by the pilots.
C．To give an example of air disasters.
D．To show that air travel is far safer than driving a car.

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A．They are less intelligent.B．They are less moral.C．They are more numerous.D．They often speak a non-English language at home.

A．They are less intelligent.
B．They are less moral.
C．They are more numerous.
D．They often speak a non-English language at home.

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