(单选题)

Students should know it is not ______ to take the risk of plagiarism in their essays.

A.unworthy

B.worth

C.worthily

D.worthwhile

参考答案：D

参考解析：

考查形容词副词辨析。句意：学生们应该知道，在论文中冒剽窃的风险是不值得的。unworthy不值得，不符合句意；worth值……的。be worth sth. /doing sth.值得做……,不符合题干的to do；be worthy of sth/ doing sth/ to be done, 例如This book is worthy of being read. = This book is worthy to be read. ；worthily副词，可敬地，正当地，不符合句意；worthwhile有价值的，可作表语，定语，be worthwhile doing sth/to do sth.，值得做……，worthwhile suggestion有意义的建议。故选D。

知识点：词义辨析英语专业基础知识词汇教师招聘-小学英语