These natural parks are very important for preserving many animals, which would _______ run the risk of becoming extinct.
A．otherwiseB．thereforeC．neverthelessD．however
A
考查副詞詞義辨析。run the risk of意為“冒……的危險”。Otherwise要不然；therefore因此；nevertheless仍然，不過；however然而。根據(jù)句意最佳答案是A。
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