我知道你高考结束就来了。
参考答案：知道你高考结束，我就来了。
John is fond ____ football, while his brother is crazy ____ music.
A．at; for
B．of; about
C．with; at
D．for; with
在自动闭塞区段内，当货物列车在设于上坡道的通过信号机前停车后起动困难时，应在该信号机上装设何种信号机？
