[求助]855 SC New Problems

newbee

Sec 13-14
14.Researchers have questioned the use of costly and experimental diagnostic tests to identify food allergies, such as milk, that supposedly disrupt normal behavior.
(A) to identify food allergies, such as
(B) to identify food allergies, like
(C) to identify food allergies, such as to
(D) for identifying food allergies, like that of
(E) for identifying food allergies, such as for
答案是C。是不是选项C 同时省略了 “identify” and “allergy”?

Sec 14-19
19.A 1972 agreement between Canada and the United States reduced the amount of phosphates that municipalities had been allowed to dump into the Great Lakes.
(A) reduced the amount of phosphates that municipalities had been allowed to dump
(B) reduced the phosphate amount that municipalities had been dumping
(C) reduces the phosphate amount municipalities have been allowed to dump
(D) reduced the amount of phosphates that municipalities are allowed to dump
(E) reduces the amount of phosphates allowed for dumping by municipalities
答案是A。
请问，如果是当时市政当局允许把Phosphates倾倒进五大湖，但是1972年的agreement（不是禁止倾倒的协议，而只是限制倾倒的协议）只是减少了amount，而不是禁止了dump，那么allow的时态应该是什么样的呢？

braveMBA

1、省略了identify
2、只能根据这句话的语言场景来判断，感觉上在这里用排除法更好，否则容易把自己绕进去，也许一直到现在都ALLOW呢。除了明显的生活事理、客观规律，可能尽量保持题目假定的场景去判定时态比较好。个人观点。

njsjfr

allow的时态肯定是发生在agreement之前的.又因为agreement是1972年发生的是过去时,所以allow必然是过去完成时了

newbee

感谢两位的解答。
不过尽量尊重原文是比较好的方法。

stellarblue

小的认为一题,省略了allergy, 怎么还有identify?
二题是时态的问题吧,同意楼上的说法

turtlechen

No! an amount of can modify countable or uncountable nouns.
Ex: 大全511
The amount of paper that will be recycled this year is expected to be greater than ever

Below phrases are for uncountable nounsColins English Grammar 2.200)

less of  ("less of" can replace "fewer of" in modern usage)
little of
much of
part of
a bit of
a good deal of
a great deal of
the whole of

[此贴子已经被作者于2004-1-8 20:27:20编辑过]

turtlechen

Yes!
Most of the time, we see "amout of + Uncountable Noun".
But it does not mean it can't follow countable noun.
I think you may try to search on gemj's great work, reading 2772.
There are few examples.

Normally,
you use "an anount of"    with  plural verb
           " the amount of"  with singular verb