单项选择题Dickens takes the French Revolution as the background of the novel______.

单项选择题The apparition of these faces in the crowd; Petals on a wet, black bough. This is the shortest poem written by______.

单项选择题______ is Thackeray's masterpiece.

单项选择题The smallest state in the United States is______.

单项选择题A ______ consists of' a vowel sound, either on its own or in the company of one or more consonant sounds.