来自黄文州的问题
Acomputerisoneofthrgreatesti____intheworld.
Acomputerisoneofthrgreatesti____intheworld.


Acomputerisoneofthrgreatesti____intheworld.
Acomputerisoneofthrgreatesti____intheworld.
inventions(意思是发明,要加s,因为前面有oneof)