Section B

　　52--56 CBAAD

　　Section B

　　52.細節甄別題。文中第二段提及“These included the use of federal student loans to pay off credit cards，effectively shifting the debt，appeals to parents for loans，cutting back on course work to increase time at paid jobs，or even dropping out altogether to work full time.”，因此，正確答案為C項。選項C是college administrators從事的活動，不是美國學生。

　　53.細節甄別題。文中開篇提到“the consequences can be serious-ranging from higher drop- out rates to future employment problems and even suicide”，最后一段談到“Card issuers were sponsoring school programs，funding activities and even entering into business partnerships with schools”，由此可以看出選項B是card issuers從事的活動，而不是美國學生，更不是使用credit card的后果。因此，正確答案為B項。

　　54.細節題。文末倒數第二句、第三句中提到了“students，card companies，university administrators”都應該為信用卡負面影響負責。因此，正確答案為A項。

　　55.主旨題。本文首句即提到“U.S.college students are increasingly burdened with credit card debt”，第二段主旨是“growing numbers of students who are unable to cope with the stress of their debts and/or part time jobs for servicing their credit cards”。第三段講“debts can haunt students”，最后一段主要講述“who should answer for the negative consequences”。因此，正確答案為A項。

　　56.推斷題。文章主要講述學生使用信用卡的負面影響，但也不能千篇一律斷然否定使用信用卡，因而選項B不對。不使用信用卡電不能保證美國學生不自殺，故選項C不對。美國學生有part-time工作，是司空見慣也不能因為信用卡的負面影響而取消，故排除選項A。采用逐個排除法，可以確定正確答案為D項。