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UML中,用例图展示了外部Actor与系统所提供的用例之间的连接,UML中的外部Actor是指( )。A.人员B.单位C.人员和单位D.人员或外部系统
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Which of the following belongs to summative assessment?A.Learner portfolio. B.Test results. C.Teachers observation. D.Student diaries.
将2. 718 28和57. 65修约至小数点后一位，正确的结果是（ ）。 A. 2. 7，57. 6 B. 2. 7，57. 7 C. 2.8，57.6 D. 2.8，57. 7
Semantization means that every new word should be presented in such a way that its meaning becomes clear to the learner.（）A对B错
The three main things that a learner has to acquire when learning a new structure are the form, meaning and（）of the structure.
下列哪种播放器版本能观看用屏幕创建的SWF文件（）A、Flash Player 4；B、Flash Player 5；C、Flash Player 6；D、Flash Player 7
老师在网上下载了一个关于地球简介的格式为rm文件，可以用下列哪种应用程序打开？（）A、Adobe Reader软件B、Real Player软件C、Microsoft PowerPoint软件D、Internet Explorer浏览器
