93.Heating-oil prices are expected to be higher this year than last because refines are paying about $5a barrel more for crude oil than they were last year
关于答案A和选项E我不太了解。
A.Heating oil price are expected to be higher this year than last because refines are paying about $5 a barrel more for crude oil than they were
E. It is expected that heating oil price will rise higher this year than last year’s because refines pay about $5 a barrel more for crude oil than they did
主要是关于than的比较的问题，前边要比较的对象是price，为什么than后面用last或是last year就对了呢，last year’s 才是指代price啊
95. The peaks of a mountain range, acting like rocks in a streambed, produce ripples in the air flowing over them; the resulting flow pattern, with crests and troughs that remain stationary although the air that forms them is moving rapidly, are known as “standing waves”
想问一下那个are用的对吗，答案上是is，理由是前面subject是flow pattern作者: bradfordchen 时间: 2011-9-15 21:18
1.可以理解为this year 和last year的比较。且last year's 这种所有格形式不正式；
