17. There has been a 30- to 40-fold increase in the incidence of malaria caused by increasing mosquito resistance against pesticides. (A) increase in the incidence of malaria caused by increasing mosquito resistance against (B) increase in the incidence of malaria because of increasing resistance of mosquitoes to (C) increasing malaria incidence because of increasing resistance of mosquitoes to (D) incidence of malaria increase caused by increasing mosquito resistance against (E) incidence of malaria increase because of increased mosquito resistance to
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发表于 2004-1-21 11:19:00
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