Most anti-virus programs are scheduled to perform a background check_____ throughout the day on a set schedule.

admin2011-04-03 40

问题 Most anti-virus programs are scheduled to perform a background check_____ throughout the day on a set schedule.

选项 A、periodically
B、periodic
C、periodical
D、period

答案A

解析在一个完整的句子之后修饰句中某一动词的词语，必须是副词。因此本题选择periodically。

转载请注明原文地址:https://jikaoti.com/ti/p4jsFFFM

托业阅读

相关试题推荐

随机试题

最新回复(0)