Because Internet security is such a dynamic field, systems that are only a year

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问题 Because Internet security is such a dynamic field, systems that are only a year old may ______ be outdated.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