单选题Hoof-and-mouth disease was eliminated in the United States by slaughtering affected herds of cattle.AisolatingBtestingCvaccinatingDkilling

单选题
Hoof-and-mouth disease was eliminated in the United States by slaughtering affected herds of cattle.
A

isolating

B

testing

C

vaccinating

D

killing


参考解析

解析:
句意:口蹄疫在美国的消除是通过屠宰所有的受影响的牲口。kill杀,屠杀。isolate(隔离)有些像,但从流行病学的角度讲,光是隔离是不能完全消除某种疾病的,只能是“控制”而已。Vaccinate(预防接种),顾名思义也只是“预防”而已,而不能eliminate了,test就更远了。

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