CDC considered the outbreak of West Nile in 1999 as a consequence of[A] the abolition

外语类 公共英语 已帮助 人

CDC considered the outbreak of West Nile in 1999 as a consequence of

[A] the abolition of the mosquito-control programs.

[B ] the surviving mosquito-borne infections.

[C] the abuse of some $ 50 million in funds.

[D] its failure to conquer mosquito-borne diseases.

热搜:导热系数单位W/m.k的含义