摘要:The bird flu through Asia has jumped from birds to humans at least 20 times so far, 16. A.sweeps;killed B.swept;killing C.sweeping;to kill D.sweeping;killing 解析:本题考查非谓语动词作定语和伴随状语的用法.第一个空用现在分词作定语.相当于谓语动词为主动的定语从句结构,第二个空为非谓语动词作伴随状语.表示和has jumped同时发生的动作. 答案:D
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