考博英语作文题 ?ydqmj2[F
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题目:Bird flu and the deteriorating environment 4R/cN'-
范文 l nuip
Earlier this year, bird flu panic was in full swing: The French P6ztP$M(
feared for their foie gras, the Swiss locked their chickens indoors, .v{ok,&
and Americans enlisted prison inmates in Alaska to help spot aqk0+
infected wild birds. 6eh\-+=
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The H5N1 virus - previously confined to Southeast Asia - was J
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striking birds in places as diverse as Germany, Egypt, and Nigeria, cn$o$:tW
and a flu pandemic seemed inevitable. * Jy'3o
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Then the virus went quiet. Except for a steady stream of human cases U- UD27
in Indonesia, the current flu epicenter, the past year's worries u2G{I?
about a catastrophic global outbreak largely disappeared. +I {ZW}rA
What happened? G
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Part of the explanation may be seasonal. Bird flu tends to be most mu[:b
active in the colder months, as the virus survives longer at low <