We can infer from the passage that the author is ___________ about unified global Internet security rules and regulations.
选择一项：
A. pessimistic
B. optimistic
C. cautious
出自：人文英语2
提示：
每天可免费获取10次答案
收藏本站【zk.995w.com】，下次访问不迷路
本站试题总数:【10253414】个 (题库试题定时更新)
