【单选题】When the world was a simpler place, the rich were fat, the poor were thin, and right-thinking people worried about how to feed the hungry. Now, in much of the world, the rich are thin, the poor are fa...
【简答题】The exact number of English words is not known. The large dictionaries have over half a million ___1___ , but many of these are compound words (schoolroom, sugar bowl) or different derivatives of the ...