[解析]
(1)B.细节理解题。根据第二段的""In the United States,house sparrows are about as widespread as artificial lighting.So they made a useful test species in a new first﹣of﹣its﹣kind study," says Meredith Kernbach.(Meredith Kernbach说:'在美国,家麻雀的分布和人工照明一样广泛。因此,在一项新的同类研究中,它们是一个有用的试验物种。')"可知,家麻雀被选为测试物种是因为它们在美国的分布很广泛。故选B。
(2)D.推理判断题。根据第三段的"In the study,some house sparrows in the lab spent the night in an area that was dimly (昏暗地) lit.These birds were slower in fighting off West Nile Virus infections than those that spent the night in full darkness.(在这项研究中,实验室里的一些麻雀在光线昏暗的地方过夜。这些麻雀抵抗西尼罗河病毒感染的速度比那些在完全黑暗中过夜的麻雀慢。)"可推知,在有光的环境中家麻雀要用更多的时间来杀死西尼罗河病毒。故选D。
(3)A.推理判断题。根据最后一段的"What light does to the birds is only part of the story,points out Davide Dominon,a physiologist at the Nether﹣lands Institute of Ecology in Wageningen. "Researchers will need to look for effects on the virus itself," he says.(瓦赫宁根荷兰生态研究所的生理学家Davide Dominon指出,光线对鸟类的影响只是故事的一部分。'研究人员将需要寻找对病毒本身的影响,'他说。)"推知,Davide Dominon认为光污染是否能延长家麻雀传播西尼罗河病毒的时间还需要进一步的研究。故选A。
(4)C.主旨大意题。根据文章的主要内容,尤其第一段的"Even moderate light pollution,a new study finds,can roughly double how long a house sparrow infected with West Nile Virus (WNV) remains at high risk of spreading disease.(一项新的研究发现,即使是中度的光污染,也能使感染了西尼罗河病毒的家雀保持高传播风险的时间延长一倍。)"可知,本文主要通过实验证明光污染使得家麻雀传染西尼罗河病毒的时间变长了。故选C。