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标题: 没有搜到GWD9-12,求助... [打印本页]

作者: 水模样 时间: 2005-10-10 09:00
标题: 没有搜到GWD9-12,求助...

没有搜到GWD9-12,求助...请给个连接,谢谢

作者: oceanalma 时间: 2005-10-10 12:12

Upup

作者: 水模样 时间: 2005-10-11 10:20

作者: niliting 时间: 2006-9-13 15:23

GWD-9-Q12:

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.

我虽然选的是A,可是不知道为什么B不可以.请牛牛把A和B都解释一下好吗?

作者: estherpeter 时间: 2007-4-24 22:59
B,C都是无关项

作者: Prison_Break 时间: 2007-4-25 15:12
b 没有什么难的啊你自己看清楚些

作者: yzhao26 时间: 2008-6-2 07:46
up

作者: SuperDan 时间: 2008-9-7 22:40
omg...这样都可以？GWD的CR题真是让人折服！

作者: Brilliance 时间: 2009-8-4 22:29
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