2. 外语
  3. Because Internet security is such a dynamic field, systems that are only a year old may ______ be outdated.

Because Internet security is such a dynamic field, systems that are only a year old may ______ be outdated.

admin2012-04-26  20
问题 Because Internet security is such a dynamic field, systems that are only a year old may ______ be outdated.
选项 A、already
B、previously
C、promptly
D、lately
答案A
解析 already已经，早已
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