【B9】
A. in the fire
B. from the fire
C. out fire
Some works are sought and reread because
A. they save time for the readers and viewers.
B. they are responsible for the readers.
C. they report international incidents.
D. they are pieces of active writing.
【B4】
A. Luckily
B. Then
C. Lucky
一辆小汽车与一辆大卡车在一段仅能通过一辆车的公路上相遇，必须有一辆车倒车才能继续通行。已知小汽车的速度是大卡车的3倍，两车倒车的速度各是各自前进速度的1/5，小汽车需倒车的路程是大卡车需倒车路程的4倍，小汽车先倒车与大卡车先倒车使两辆汽车都通过所花时间的整数比是多少？
A. 2：3
B. 1：4
C. 4：5
D. 5：6
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