【判断题】人体在生命活动过程中,不断地从环境中摄取营养物质,并经过改造将其转变为人体的组成成分称为异化作用。
【单选题】在对最终产品征收进口关税的名义税率不变时,对进口原料和中间产品征收的关税税率越低,该名义关税税率的保护作用就()。
【单选题】There is hardly a generalization that can be made about people' s social behavior. and the values informing it that cannot be______ from one or another point of view, or even ______as simplistic or va...
C.
harangued... retracted
D.
challenged... dismissed
【单选题】魏晋南北朝文学中隐逸主题可以追溯到( )
【单选题】设Φ表示空集合,若A∩B=Φ且A∪B=Φ,则( )
【单选题】过去的演奏家对音乐的解读都因人而异,是因为他们是通过()来学习音乐的。
【单选题】— Listen ! Helen is singing in the classroom . —It’s ______ .She hardly ever sings .