补充题15

hpp920

15. Acid rain and snow result from the chemical reactions between industrial emissions of sulfur dioxide and nitrogen oxides with atmospheric water vapor to produce highly corrosive sulfuric and nitric acids.

a.with atmospheric water vapor to produce highly corrosive sulfuric and nitric acids

b. with atmospheric water vapor producing highly corrosive sulfuric and nitric acids

c. and atmospheric water vapor which has produced highly corrosive sulfuric and nitric acids

d. and atmospheric water vapor which have produced sulfuric and nitric acids which are highly corrosive

e. and atmospheric water vapor to produce highly corrosive sulfuric and nitric acids

ETS says: in d, it is unclear whether "which have" modifies "reactions" or " sulfur dioxide, nitrogen oxides , and water vapor taken together.

我的问题是:正确答案e中的to produce 短语不也象which一样有修饰不明的问题吗? 怎样知道to produce highly corrosive sulfuric and nitric acids 是修饰reactions而不是修饰sulfur dioxide, nitrogen oxides , and water vapor taken together?

谢谢!

luoffice

D用了"have"所以不知道指三个和"reactions"里那个好.

"to produce" 不起修饰作用

[此贴子已经被作者于2004-7-17 12:43:31编辑过]

cranberry

那不定式作是什么成分呢？

hpp920

还是不明白,顶!!!!!!!!!!!1

sunshining

这里的to短语表示什么意思啊？哪位nn或者斑竹能回答一下吗？

谢谢