题目内容：
共用题干Sending E-mails to Professors
One student skipped class and then sent the professor an e-mail________(51)for copies ofher teaching notes.
Another_________(52)that she was late for a Monday class because she was recovering fromdrinking too much at a wild weekend party.
At colleges and universities in the U. S.,e-mail has made professors more approachable（平易近人）.But many say it has made them too accessible,__________(53)boundaries that traditionally kept students at a healthy distance.These days,professors say,students seem to view them as available_________(54)the clock, sending a steady stream of informal e-mails.
"The tone that they take in e-mails is pretty astounding（令人吃惊的）,"said Michael Kessler, an assistant dean at Georgetown University."They'll________(55)you to help:'I need to know this."'"There's a fine________(56)between meeting their needs and at the same time maintaining a level of legitimacy（正统性）as an_________(57)who is in charge."
Christopher Dede,a professor at the Harvard Graduate School of Education,said_________ ( 58 ) show that students no longer defer to（听从）their professors,perhaps because they realize that professors'________(59)could rapidly become outdated."The deference was driven by the_______(60)that professors were all-knowing sources of deep knowledge,"Dede said,and that notion has_________(61).
For junior faculty members,e-mails bring new tension into their work,some say, as they struggle with how to________(62).Their job prospects,they realize,may rest in part on student evaluations of their accessibility.College students say e-mail makes________(63)easier to ask questions and helps them learn.
But they seem unaware that what they write in e-mails could have negative effects________ (64)them,said Alexandra Lahav,and associate professor of Law at the University of Connecticut. She recalled an e-mail message from a student saying that he planned to miss class so he could play with his son.Professor Lahav did not respond.
"Such e-mails can have consequences,"she said."Students don't understand that ________(65)they say in e-mail can make them seem unprofessional,and could result in a bad recommendation."
_________(61)
A:strengthened
B:weakened
C:reinforced
D:consolidated
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