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  3. Pandemic(大面积流行的) H1N1 2009 The most active areas of pandemic influenza transmission currently are in central and eastern Eur

Pandemic(大面积流行的) H1N1 2009 The most active areas of pandemic influenza transmission currently are in central and eastern Eur

admin2011-04-15  40
问题                Pandemic(大面积流行的) H1N1 2009
    The most active areas of pandemic influenza transmission currently are in central and eastern Europe. Focal(集中的) increases in rates during recent weeks were______【51】in at least two eastern European countries. A high intensity of respiratory (呼吸的) disease activity with concurrent (同时存在的) circulation of pandemic influenza still ______【52】in parts of southern and eastern Europe, ______【53】in Greece, Poland, and Ukraine.
    In Western Europe, influenza transmission remains ______【54】and widespread, but overall disease activity has peaked. All influenza viruses in Western Europe were pandemic H1N1 2009, ______【55】, very small numbers or seasonal influenza viru-ses covering less than 1% of all influenza viruses found, were reported in Russia. In ______【56】, limited available data indicate that active, high intensity transmission is occurring in Northern African countries______【57】the Mediterranean coast.
    In Central Asia, limited data______【58】that influenza virus circulation remains active, but transmission may have recently peaked in some places. In West Asia, Israel, Iran, and Iraq also appear to have passed their______【59】period of transmission within the past month though both areas continue to have some active transmission and levels of respiratory disease activity have not yet______【60】to baseline levels. In East Asia, influenza transmission remains active but appears to be______【61】overall. Slight increases in ILI were reported in Mongolia after weeks of declining activity following a large peak of activity______【62】one month ago.
    In North America, influenza transmission______【63】widespread but has declined quickly in all countries. In the tropical regions of Central and South America and the Caribbean, influenza transmission remains geographically widespread but overall disease ______【64】has been declining or remains unchanged in most parts.
    ______【65】for focal increases in respiratory disease activity in a few countries.
选项 A、plays
B、exists
C、keeps
D、maintains
答案B
解析 本题有一定难度, 考查词义辨析, 可以先看选项得到信息提示, 很明显文章此处是说“……仍然存在部分东南欧国家”, 答案是B。
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