题目

 “Melting pot” means a place where people from many different racial groups or cultures form a united society. The idea comes from __41.___ metals in a container. When they melt, the metals ___42._ and become something new and stronger. The _43.___ has been used to describe the United States as a nation created from people who came here from many different countries. A Frenchman living in America expressed the idea __44.__ two hundred years ago.  J. Hector de Crevecoeur wrote in his book Letters from an American Farmer, published in 1782, that America had people from many differe下列物质中既属于芳香化合物又属于醇的是（ ）A． B．C． D．CH3CH2OH