单项选择题
A．holds international conference on the subject of illiteracy regularly B．is an organization attached to the United Nations C．has done much to help the illiterates learn to read and write D．is a big company in Paris
A．3.4% of the total population in the world B．2.5 % of the total illiterate in the world C．1.7% of the total population in the word D．1.7 % of the total illiterate in the world
A．two hundred and fifty million B．one hundred million C．about half of the total population in the world D．seven thousand million