Spaceexplorationhasbeenmadewit

Space exploration has been made ______ with the development of modern science and technology.

A．it possible

B．it was possible

C．that possible

D．possible

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A．talked

B．talks

C．had talked

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A．taken hold of

B．taken in

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A．resistance

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A．scolded

B．complained

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A．proving

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