单项选择题

参见下图。如果苹果价格上涨，那么工资会

A．增加，并且会雇佣更多摘苹果工人
B．减少，并且会雇佣更多摘苹果工人
C．增加，并且会雇佣更少摘苹果工人
D．减少，并且会雇佣更少摘苹果工人

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单项选择题

Which of the following statements is NOT TRUE according to iexplore 2?

A．We will get access to the VR technology as easily as we do now with a cell phone.
B．The text focuses on the VR technologies that have already been applied to many fields.
C．Current 3D films have failed to live up to the expectations of the audience.
D．VR has limitless potential to change our life and the world.

单项选择题

下图为哪种类型的机构演化与变异。（）
A、转动副变异设计
B、构件形状变异
C、机架变换
D、移动副变异