单选题 "Old is suddenly in"(Line 1, Par

A、 1) most probably means______.A. America has suddenly become a nation of old peopleB. gerontology has suddenly become popularC. Some elderly professors are found on American campusesD. American colleges have realized the need of enrolling older students

【正确答案】

【答案解析】该题具有一定难度。做对该题须正确理解文章开头两行。