A lot of ants are always invading my kitchen.They are a thorough_____.a.nuisanceb.trouble为什么不选b?

A lot of ants are always invading my kitchen.They are a thorough_____.a.nuisanceb.trouble为什么不选b?
A lot of ants are always invading my kitchen.They are a thorough_____.
a.nuisance
b.trouble
为什么不选b?

A lot of ants are always invading my kitchen.They are a thorough_____.a.nuisanceb.trouble为什么不选b?
nuisance是最佳答案,表讨厌的事一定是可数名词；trouble可能是不可数名词
另外还和老外习惯有关
nuisance讨厌的人(或事物);麻烦事[C]
trouble困难;困境;麻烦的事[U][C]