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Hundreds of species are declared to _____ in the coming century.
A．die awayB．die outC．die downD．die off
B
考查詞組：A. die away漸漸消失，B. die out滅絕，C. die down平息，D. die off相繼死去，句意是：數(shù)百種物種被宣布在下個世紀將滅絕。選B。
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