请教问题: 885-7 & 13

michellehoS

7.    Dental caries and gingivitis can be exacerbated not only by the foods patients eat but also by when the patients eat them.
(A) not only by the foods patients eat but also by when the patients eat them
(B) by not only the foods patients eat but also by when the patients eat them
(C) not only by the foods patients eat but also by time when the foods are eaten
(D) by not only the foods that are eaten by patients but also by the times the foods are eaten
(E) not only by what patients eat but also by when they eat it
答案是E, 我选A. E 中的it 是指代什么呢? 为什么A 不对呢? 请指点.


13.    In spite of continuing national trends toward increased consumption of specialty foods, agronomists in the Midwest foresee a gradual reversion to the raising of agricultural staples: feed corn and hard red wheat.
(A) a gradual reversion to the raising of agricultural staples
(B) that a gradual reversion back will feature the raising of agricultural staples
(C) a gradual reversion back to the raising of agricultural staples again
(D) a gradual reversion to raise agricultural staples
(E) a gradual reversion into the raising of agricultural staples
答案是A, 我选D.
我的看法: "尽管...持续上涨, ...预见了一个对于这个上涨的逆转"
"to " prep. "对于"
foresee 预见. 用法是foresee sth.
不知道对不对,请大伙给看看.

多谢各位!

michellehoS

醍醐灌顶

parispings

文章后未划线部分有一个“by”表明前面应该用被动

momohe

it ==> what

reversion to (‘ to ' is 介词，不是不动式，)
correct usage: reverse to sth
incorrect:   reverse to do sth

Fadaways

a的结构明显不对称，不过e里面的it，就吃不准了，肯定是it么？
to raise表示这个reversion的目的就是raise，和原意有出入。
这是我的看法

期待高手正解

suners

13.

尽管对specialty good的购买持续上涨，agronomists预见（种植趋势）逐渐回归到种植主要农作物。

to这里确实要用作介词，是reversion to noun/ing 的介词“到”。

to这里不能是to do不定式，如果是不定式，就to raise修饰reversion了，reversion来种植，不合理。

suners

7.

it指代what they eat（wh引导的名词性从句，功能相当于名词词组）。

not only...but also... 包含的结构要平行。

A中，前面是名词+定语从句，后面是wh引导的名词性从句。

E中，两个Wh引导的名词性从句并列。