The recent outbreak of bird flu results in______. It has been discovered that______.

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问题 The recent outbreak of bird flu results in______.
It has been discovered that______.

选项 A、H5N1 does not transmit among human beings
B、bird flu spreads only among birds
C、H5N1 is a variant of flu virus
D、bird flu adapts easily to other species

答案C

解析 推断题。文中第四段原文为A flu strain called influenza A(H5N1),strain意为“种、品种”,同C的variant(变体)意思相近。C正确。特别注意A,虽然最后一段提到no person-to-person transmissions have been reported,但由此不一定就能得出H5N1 does not transmit among human beings的结论。B、D与原文意思不符。
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