和两条平行直线中的一条是异面直线的直线与另一条直线的位置关系是（ ）。
相交或异面
Sometimes parents’ control of young kids will be thought to be such an invisible rope, with which to tie them tightly, that they _____ tried to cut it.
A．thoroughly
B．visually
C．desperately
D．appropriately
普通拨号帐号或ISDN帐号，可不可以把它用在ADSL上？
