GWD19-Q12~求助

evelyn205205

A mosquito bite can transmit to a person the parasite that causes malaria, and the use of mosquito nets over children’s beds can significantly reduce the incidence of malarial infection for children in areas where malaria is common.Yet public health officials are reluctant to recommend the use of mosquito nets over children’s beds in such areas.

Which of the following, if true, would provide the strongest grounds for the public health officials’ reluctance?

A.Early exposure to malaria increases the body’s resistance to it and results in a lesser likelihood of severe life-threatening episodes of malaria.

B.Mosquito bites can transmit to people diseases other than malaria.

C.Mosquito nets provide protection from some insect pests other than mosquitoes.

D.Although there are vaccines available for many childhood diseases, no vaccine has been developed that is effective against malaria.

E.The pesticides that are most effective against mosquitoes in regions where malaria is common have significant detrimental effects on human health.

本题选的是：A。
原文说官方认为建议使用蚊帐是没必要的，支持这个结论的话，难道不和蚊帐有关么？我选的是C。

wycg

C说nets 不但可以去蚊还可以去其它的虫子. 这是和官方意见不一致的.

evelyn205205

C说nets 不但可以去蚊还可以去其它的虫子. 这是和官方意见不一致的.

-- by 会员 wycg (2011/8/1 23:19:13)

哦，是这样，是我自己对C的理解有误。
Many thanks！