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. If bitten by a mosquito, that virus can now spread to slower in fighting off West Nile Virus infections than those that spent the night in full darkness. WNV needs a mosquito to spread from bird to bird, or from bird to human. If a mosquito doesn’t pick up reproduction. B. Mosquitoes can spread WNV from animals to humans. C. Light pollution lengthens the time of birdsˈ spreading WNV. D. The light pollution may help WNV develop slower. 第二节（共5 小题；每小题2 分，满分10