What kind of method did the scientist use to kill disease-carrying mosquitoes? ( )

参考解析：

细节题。根据题干关键词"method, scientist, disease-carrying"定位至前两段，"Scientists say they nearly eliminated disease-carrying mosquitoes on two islands in China using a new technique." "They used a novel approach for pest control. First, they infected the bugs with a virus-fighting bacteria, and then zapped them with a small dose of radiation."可见，他们用细菌感染和辐射的方法让携有病毒的蚊子绝育，第三段第一句对zap进行了解释，意思是绝育，A项正确。本题容易误选C项，C项说的是他们用一种抗病毒细菌感染杀死小虫，让它们立即死亡，原文中只提到了死亡，并没有说是否会立即死亡。故本题正确答案选A。