These natural parks are very important for prese

问题补充：

Thesenaturalparksareveryimportantforpreservingmanyanimals,whichwould______runtheriskofbecomingextinct.A.otherwiseB.thereforeC.neverthelessD.however

答案：

A解析考查副词词义辨析。run the risk of意为“冒……的危险”。Otherwise要不然；therefore因此；nevertheless仍然，不过；however然而。根据句意最佳