[填空题]The roads have to be ______ (wide) so that the problems of traffic jam can be solved.

[单项选择]Several recent studies have gained wide attention for reconfirming the tragic disconnection of millions of black youths from the American mainstream. Harry Holzer, an economist at Georgetown University and a co-author of one of the recent studies, feels joblessness is due to largely weak schooling, a lack of reading and math skills at a time when such skills are increasingly required even for blue-collar jobs. Unable to find jobs, he claims, black males turn to illegal activities, especially the drug trade and chronic drug use, and often end up in prison.
As usual, it fails to answer the important questions. Why are young black men doing so poorly in school that they lack basic literacy and math skills Scholars must have known that countless studies by educational experts have found that poor schools, per se(本质上), do not explain why after 10 years of education a young man remains illiterate.
Nor have studies explained why, if .someone cannot get a job, he turns to crime
A. They are totally involved in it.
B. They like it as the black people do.
C. They appreciate it selectively.
D. They regard it as important as SAT.