题目

America, the“land of immigrants”, has always had people of many different nationalities and languages. A survey indicates that ethnic settlements, found particularly in the central cities, have kept the language and culture of American immigrants. Some local residents can do quite well in their native language, without having to bother learning English. __ 1    . Yet only three percent reported that they spoke English “not well” or “not at all”. That means that slightly more than one out of ten Americans could be considered bilingual. Besides that, many high school and co当除数是被除数的2.5倍时，这时所得的商与下面算式（　　）所得的商相同．A．2.5÷1B．4÷10C．5÷2