语法与词汇 At three thousand feet, wide plains begin to appear,and there is never a moment when some distant mountain is not _____.无
【正确答案】 D
【答案解析】in sight可以见得到, 被看到。 on view展览, 上映。 at a glance看一眼, 瞟一眼。 on the scene出现, 到场。