Which of the following is NOT a type of institution in U.S.

A．The literary world, the art circles, social science-economics.
B．History and geography, science and technology.
C．Species and animal knowledgeable sketches.
D．Selected readings in newspapers and periodicals, culture and education, words and sentences, translation exercises, etc.

A．People of comparatively higher levels.
B．People consisting largely of university students, postgraduates, English workers.
C．Those who study English abroad.
D．The lovers of English language.