单项选择题
The 1983 report"A Nation At Risk"cited as example of the decline of educational standards（）
A.high rates of adult illiteracy B.declining SAT scores C.low scores of American students in key subjects as compared with scores of students of other countries D.All of the above
单项选择题 There is（）age limit for adult education.
单项选择题 public and private colleges and universities and community colleges offer（）.
单项选择题 The House Speaker and the temporary President of the Senate are usually（）
