题目

Also everyone knows the meaning of Mr., Mrs., and Miss. Mr. is used before the names of men. Mrs. is for married women and Miss is for single women. But what is Ms? For some time business in the United States have used Ms before a woman's name when they do not know whether the woman is married or not. Today, however, many women prefer to use Ms rather than Mrs. or Miss. The word Mr. does not tell us whether or not a man is married. Many women think this is an advantage for men. They want to be equal to men in this way. These women feel that it is not important for people to know whether they aIt’s________a difficult question that few of us can answer it.A.quiteB.soC.suchD.very