問題詳情
( 2 ) Disaster movies often portray catastrophes that destroy, or at least threaten to destroy, Earth’s entirepopulation. In fact, a virus emerged in the 1970s that could have been just that lethal.Named after a river that traverses the Congo, the Ebola virus originally manifested itself in theinterior of Africa in 1976. Two strains of the disease, with almost identical symptoms, affected humans:Ebola Zaire and Ebola Sudan. The Sudan version was deadly enough, killing 50 percent of those itinfected; however, Zaire, with its 90 percent mortality rate, was even worse.The origins -- though not the cause -- of Ebola Sudan can be traced back to a single individual in aSudanese town. Ebola Zaire seemed to erupt in over 50 villages simultaneously. Both strains quicklyinvaded local hospitals, where needle sharing and other unsanitary practices ensured the rapid spreadingof the infection by bringing people into contact with contaminated blood. If the virus had been capableof spreading through the air, or if one infected person had unknowingly entered a large populationcenter, Ebola might have become a worldwide epidemic.However, soon after these fierce outbreaks the virus died out, at least temporarily. Ebola was solethal and killed so quickly (in a matter of days) that within a short period of time there was no onearound to infect. Hospital workers in at least one case deserted their workplace in panic, thus halting theadministering of potentially unclean, disease-spreading injections.But Ebola has not disappeared. With no known vaccination or cure in the offing, it seems only amatter of time until another epidemic erupts.
【題組】29. Another appropriate title for this passage is
(A) A Quick and Frightening Killer.
(B) How Ebola Zaire Differs from Ebola Sudan.
(C) Diseases of Africa.
(D) The Dangers of Needle Sharing.
參考答案
答案：A
難度：適中0.655172
統計：A(19),B(2),C(7),D(0),E(0)