【题目】________ was a desperate race against time to land the plane before it ran out of fuel. Fortunately, the young pilot made it eventually.
A.ItB.ThisC.WhatD.As
在线课程【答案】A
【解析】
考查代词和连词辨析。句意：在飞机燃料耗尽之前着陆是一场与时间的绝望竞赛，幸运的是，这位年轻的飞行员做到了。it在此作形式主语，真正的主语to land the plane before it ran out of fuel，故选A项。