2. 职称英语
  3. Experts suggest that all computers be checked______to protect important files an

Experts suggest that all computers be checked______to protect important files an

游客2025-06-14  14
问题 Experts suggest that all computers be checked______to protect important files and programs.
选项 A、period
B、periodic
C、periodically
D、periodical
答案 C
解析 单词形态：副词1．空格前出现了被动语态。动词变为被动语态时后面可接副词。因此副词(C)periodically为正确选项。2．you should check all computers periodically改为被动语态时，应为all computers should bechecked periodically。that前suggest是表建议的动词，因而should应省略。
转载请注明原文地址:https://tihaiku.com/zcyy/4117894.html
相关试题推荐
随机试题
最新回复(0)