建立近代警察制度较早的国家是美国和英国。 ( )
参考答案：错
The hours ________ the children spend in their one way relationship with television people undoubtedly affect their relationships with real-life people．
A．that
B．when
C．in which
D．on which
大型工件划线时，如何选定第一划线位置？
