When people talk about the cities in France,the first ____ comes into mind is Paris.Aone Bthat为什么选B,为什么可以省略one,而不是选A省略that呢

Question

When people talk about the cities in France,the first ____ comes into mind is Paris.
Aone Bthat
为什么选B,为什么可以省略one,而不是选A省略that呢

Answer 1

comes into mind 是个定语从句,而first（one）是先行词,这里先行词做主语,你知道的,做主语的时候关系代词是不能省略的.
而first的词性有两个,一个是形容词,第二个就是名词,因此first可以代替first one
不懂可以继续追问,