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The situation poses a grave threat to world peace.（英译中)
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A．Nature changed our environment over the years.B．We must avoid wasting resources and
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It is important to ______our awareness about environment protection.A. improveB. makeC.
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That our environment has little to do with our abilities, characters and behavior______cen
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Its time that we ______ firm measures to protect our environment.A．have takenB．tookC．are t
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（) has been defined as a "threat of harm made to compel a person to do something
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“The biggest threat to our environment today is the way we, as human beings, see out e
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