问题补充:
单选题Beforethefinalexamination,manystudentshaveshown____oftension.Somehavetroubleinsleepingwhileothershavelosttheirappetite.A.anxietyB.marksC.signsD.remarks
答案:
C解析anxiety与 tension 同义,意思为紧张;mark记号,痕迹; sign迹象,现象,标记; remark评论。根据句意,应为show signs of tension表现出紧张的样子。