[填空题]Educational attainment in rural America reached a historic
height in 2000, with nearly one in six rural adults holding a (1) ______
4-year college degree, and more than three in four complete (2) ______
high school. As the demand of workers with higher educational (3) ______
qualifications rises, many rural policymakers
have come to view local educational levels as a critical
determinant of job and income growth in their communities.
But policymakers are facing with two key questions. (4) ______
First, does a better educated population lead to greater
economic growth According to a recent study, rural counties
with higher educational levels saw rapid earnings and (5) ______
income growth over the past two decades than counties with
lower educational levels. However, economic returns to
education for rural areas continue to lag that for urban areas. (6) ______
Second, are the