选B:like that in Nanjing.that指代weather。
like 做介词时,意为像like that in 意为这样的as that in 意为如在as that of 意为那个人觉得应该选A望采纳。
选B 还原肯定句。the weather in wuxi (very much ) is _like___that(指代weather)___in__ nanjing.
个人觉得是A