16. Because natural gas is composed mostly of methane, a simple hydrocarbon, vehicles powered by natural gas emit less of certain pollutants than the burning of gasoline or diesel fuel.
(A) less of certain pollutants than the burning of gasoline or diesel fuel (B) fewer of certain pollutants than burning gaso- line or diesel fuel do (C) less of certain pollutants than gasoline or diesel fuel (D) fewer of certain pollutants than does burning gasoline or diesel fuel (E) less of certain pollutants than those burning gasoline or diesel fuel
以前关于这道题的讨论都是less 和 pollutants可数不可数问题 实在找不到我的问题, 所以"自立门户"咯 请版主见谅啊 E选项: those 指代vehicles ; powered by natural gas 和 burning gasoline 都是修饰vehicle(those)的 那么, 主干为...vehicles emmit less than those... those是否缺少动词的补出呢?
[此贴子已经被作者于2007-7-17 22:20:42编辑过] |