[单项选择]The empty house, in a middle-class corner of southern California, is two storeys high and boasts a three-car garage. Roses bloom around a kidney-shaped swimming pool, which is green with algae. Bill Bobbitt, a county inspector, dips a ladle into the water and brings up half a dozen wriggling larvae. Mosquitoes, and the West Nile virus that some of them carry, are thriving in California’s plunging property market.
West Nile virus arrived in America in 1999 and made it to California three years later. Since then it is known to have infected 2,300 people in the state, of whom 76 have died. In Orange County this is the worst summer yet. By this point last year officials there had discovered nine birds that had been killed by West Nile virus and not one infected mosquito. So far this year they have found 219 infected birds and 75 infected mosquitoes.
Some of this rise is due to better testing and co-operation with the animal services department, which receives most reports of dy
A. Mosquitoes carrying West Nile virus was spotted last year.
B. Death caused by West Nile virus has exceeded 1000.
C. West Nile virus has circulated in US for about 10 years.
D. More than 200 birds are reported to die of West Nile virus.

最新试题

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