白勇P188 7 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 gasoline or diesel fuel do C. less of certain pollutants than gasoline or diesel fuel D. fewer of certain pollutants than does burning of gasoline or diesel fuel E. less of certain pollutants than those burning of gasoline or diesel fuel
答案是E,我的理解是fewer polutants,
白勇书上说是 emit less of pollutants ,less of向前修饰动词emit,而不是修饰pollutants |