問題詳情

第二篇：The year 2018 will mark the 100th anniversary of the deadliest influenza outbreak in history. Scientists estimate thatthe influenza pandemic of 1918 killed more than 50 million people around the world. Other estimates go much higher.Because of 36 medical record-keeping, we may never know the exact number.However, the outbreak was a global disaster, killing more people than World War I. The 1918 flu pandemic was alsodifferent from other outbreaks. It struck many healthy, young people. Viruses usually affect sick or old people. Scientists now saythey know why. In 1918, people born after 1889 were most at risk because they 37 to an earlier virus as children. Thisexposure would have protected them somewhat from the 1918 flu.Creating an effective flu vaccine is difficult. Each year, medical scientists develop flu vaccines. But they can onlyguess 38 strain of the virus will spread. 39 , flu viruses are constantly changing – they can change from oneseason to the next or they can even change within the course of one flu season.Health officials remain concerned about another flu pandemic because new strains of the flu virus appear regularly. However,outbreaks do not affect all parts of the world equally. Experts point that pandemics hit the developing world harder because oflow vaccination rates. To stop the next pandemic, scientists are now researching 40 a universal influenza vaccine. However,until a universal influenza vaccine is available, today’s seasonal flu vaccine remains important. Experts say that they may preventthe spread of the flu virus and may lower the risk of a deadly pandemic like the one in 1918.
36.
(A) plenty of
(B)a risk of
(C)a lack of
(D)sort of

參考答案

答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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