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The conservation area is very important for preserving many animals and plants, which would ______ run the risk of becoming extinct.

A．otherwiseB．thereforeC．thoughD．instead

A

解析試題分析：考查副詞：整句意思為“這些國家公園對保護(hù)多種動物都非常重要，而這些動物若不保護(hù)，將可能瀕臨滅亡�！� ， A. otherwise“否則”，B. therefore“因此”，C. though然而D. instead“代替，反而”，選A。
考點(diǎn)：考查副詞

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