[单项选择]

Plagiarism Lines Blur for Students in Digital Age

At Rhode Island College, a freshman copied and pasted from a Web site’s frequently asked questions page about homelessness—and did not think he needed to credit a source in his assignment because the page did not include author information.
At DePaul University, the tip-off (爆料) to one student’s copying was the purple shade of several paragraphs he had lifted from the Web; when confronted by a writing tutor his professor had sent him to, he was not defensive—he just wanted to know how to change purple text to black.
And at the University of Maryland, a student critisized for copying from Wikipedia in a paper on the Great Depression said he thought its entries—unsigned and collectively written—did not need to be credited since they counted, essentially, as common knowledge.
Professors used to deal with plagiarism(抄袭) by warning students to give credit to others to fol
A. More undergraduates admitted to copying a few sentences in written assignments.
B. Less undergraduates admitted to copying a few sentences in written assignments.
C. More undergraduates take plagiarism from the Web for granted nowadays.
D. Less undergraduates are copying from the Web than earlier in the decade.