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【单选题】
在基于Struts框架的Web应用中，下面关于Action类的说法正确的是（）A.
Action类属于模型组件
B.
Action类主要用来完成实际的业务逻辑
C.
Action类负责调用模型的方法，更新模型的状态，并帮助控制应用程序的流程
D.
在Web应用启动时会自动加载所有的Action实例
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反馈参考答案：
举一反三
【单选题】工业机器人从一个点运动到另一个点时经常会遇到奇点而无法动作，以下运动指令哪条指令在工业机器人作业范围内不会遇到奇点？
A.
MoveJ
B.
Move L
C.
Move C
D.
Move Abs J
【单选题】It’s nice ____ you to tell me the news because it’s very important _____ me.
A.
for, of
B.
of, for
C.
for, for
D.
of, of
【单选题】It is not so __________ as yesterday, so there are __________ people sitting in the square.
A.
cold; fewer
B.
warm; more
C.
cold; more
D.
cold; less
【简答题】阅读理解。 This sad story happened on a cold winter evening. It was so cold and snow was falling so heavily that the roads were covered with ice and a strong wind was blowing. Being outside in such weather...
【单选题】It was ________ that there was nobody on the street.
A.
so cold day
B.
such cold day
C.
such a cold day
D.
a day so cold
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