This is a s____ of twin brothers, Justin and Paul. Their friend Susan calls them for h____ . Justin and Paul drive to Hill Building q____ . Three man in police uniform p____  them into a green van. They are not p____ . They are the robbers. The twin brothers aren’t a____. Paul opens the back door of the van w____  a knife. They take different r____ to the police station. They meet the robbers  a ____  in the police station. They are s____ . The policemen stop the van because the back door of the van is open.

三个相同的容器内水面高度相同，甲容器内只有水，乙容器内有木块漂浮在水面上，丙容器中悬浮着一个小球正确的是（　　）

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有意义的生活都有明确的进取目标，下列认识错误的是（    ）