Since Tom downloaded a virus into his puter, he can not open the file now.
A. readily
B. horribly
C. accidentally
D. irregularly
网友回答
A. readily
B. horribly
(答案→)C. accidentally
D. irregularly
解析：副词词义辨析。根据句意，只有C项符合题意。由于汤姆无意中下载了病毒到电脑中，现在无法打开这个文件。readily乐意地；horribly可怕地；accidentally无意地，意外地；irregularly无规则地。