问题
选择题
Qinghai-Tibet Railway(青藏铁路) was completed last year. It is the __________ railway that connects Tibet with the other parts of China.
A．first
B．second
C．third
D．fourth
答案
答案：A
考查序数词的用法。句意“青藏铁路是去年完工的。它是第一条连接西藏和其他地区的铁路。”A“第一”；B“第二”；C“第三”；D“第四”。故选A。