It can be inferred from the passage that Lyme
问题详情
It can be inferred from the passage that Lyme disease has become prevalent in parts of the United States because of which of the following？
A．The inadvertent introduction of Lyme disease bacteria to the United States
B．The inability of modern sanitation methods to eradicate Lyme disease bacteria
C．A genetic mutation in Lyme disease bacteria that makes them more virulent
D．The spread of Lyme disease bacteria from infected humans to noninfected humans
E．An increase in the number of humans who encounter deer ticks请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：E
解析：ThebestanswerisE.ThepassagementionstworeasonsfortheriseintheprevalenceofLymedisease:anincreaseinthenumberofdeerandthusofthenumberofthedeerticksthatcarrythebacteria,andtheproliferationofhumanactivityinthedeer’shabitat,suggestingthatcontactbetweenhumansanddeertickshasincreasedsignificantlysincethelatenineteenthcentury.NomentionismadeofthetransmissionofLymediseasebacteriatotheUnitedStates,orofanygeneticmutationsinthebacteria,soAandCcanbeeliminated.ChoiceBisincorrectbecausethepassagedoesnotsuggestthatanyattemptwasmadetoeradicateLymediseasethroughbettersanitation.ChoiceDisincorrectbecausethepassagedescribesonlydeerticksasasourceofLymediseasebacterium,notinfectedhumans.
