排除了ABC，DE看起来似乎都不够平行，比较了一下选了D，看了答案后不太理解为啥D不对，麻烦老师区分一下DE～～

D的错误原因可以理解为 因为后一个river有一个the，所以有可能引起误解：是同一个river？

DE的区别 Unlike many United States cities, where a river is no longer the focal point of urban life, the river in San Antonio winds through the middle of the business district, and the River Walk, or Paseo del Rio, is the city's most popular attraction. Unlike many United States cities, where a river is no longer the focal point of urban life, the river in San Antonio Unlike the river in many cities in the United States, which is no longer the focal point of urban life, in San Antonio the river Today the river in many cities in the United States is no longer the focal point of urban life, unlike San Antonio, where it In few United States cities today, a river is the focal point of urban life, but the river in San Antonio No longer do many cities in the United States have a river as the focal point of urban life, but in San Antonio the river