Aninventionisanewwayofsolvinga

An invention is a new way of solving a problem, so try our best to think of many ________and unusual ways.

A．varying

B．variety

C．varied

D．variation

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A．no matter which	B．whichever
C．wherever	D．no matter what

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A．rid of

B．content with

C．modelled after

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world _______ in a completely new way .

A．cut off

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A．defended

B．defeated

C．preserved

D．prevented

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A．by chance

B．in particular

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