NN啊，NN，请进来指导一下吧~~

许仙

以下是引用祝英台在2008-4-21 10:33:00的发言：

194. Presenters at the seminar, one who is blind, will demonstrate adaptive equipment that allows visually impaired people to use computers.
(A) one who
(B) one of them who
(C) and one of them who
(D) one of whom
(E) one of which

答案D. Whom 作介词of 的宾语所以用宾格形式whom。

但是不明白 whom is blind.又是什么从句？

one of whom is blind是前面的定语从句。这里所有的表达中只有D合适，代表人，要么是 who are blind，要么是one of whom is blind

许仙

以下是引用祝英台在2008-4-21 10:50:00的发言：

The peaks of a mountain range, acting like rocks in a streambed, produce ripples in the air flowing over them; the resulting flow pattern, with crests and troughs that remain stationary although the air that forms them is moving rapidly, are known as "standing waves."

A crests and troughs that remain stationary although the air that forms them is moving rapidly, are
B crests and troughs that remain stationary although they are formed by rapidly moving air, are
C crests and troughs that remain stationary although the air that forms them is moving rapidly, is
D stationary crests and troughs although the air that forms them is moving rapidly, are
E stationary crests and troughs although they are formed by rapidly moving air, is

答案C没问题。但是B中although 从句，OG的解释是说： the subordinate clause in the passive voice following although is awkward and unclear.怎么理解这句话啊？

B，这里我的理解是，第一GMAT里喜欢主动语态大于被动语态；第二，用被动语态的话，最后面的are不清楚是谁的谓语，可能是crests and troughs 的，也可能是air的。

祝英台

12. The success of the program to eradicate smallpox has stimulated experts to
pursue what they had not previously considered possible -- better control, if not eradication, of the other infections such as measles and yaws.

A. what they had not previously considered possible -- better control, if not eradication, of the other infections such as

B. what they had not previously considered a possibility -- better control, if not
eradication, of such infections like

C. something they had not previously considered possible -- better control, if not
eradication, of such infections as

D. something not considered a previous possibility -- better control and perhaps
eradication, of other infections such as

E. the possibility of what they had not previously considered possible -- better
control and possibly eradication of infections like

答案是C，这里better control是什么成分啊，其什么作用？

许仙

以下是引用祝英台在2008-5-3 10:06:00的发言：

12. The success of the program to eradicate smallpox has stimulated experts to
pursue what they had not previously considered possible -- better control, if not eradication, of the other infections such as measles and yaws.

A. what they had not previously considered possible -- better control, if not eradication, of the other infections such as

B. what they had not previously considered a possibility -- better control, if not
eradication, of such infections like

C. something they had not previously considered possible -- better control, if not
eradication, of such infections as

D. something not considered a previous possibility -- better control and perhaps
eradication, of other infections such as

E. the possibility of what they had not previously considered possible -- better
control and possibly eradication of infections like

答案是C，这里better control是什么成分啊，其什么作用？

better control是something的同位语。

祝英台

50.        (27142-!-item-!-188;#058&003455)

 

With no natural predators and expanses of green suburban neighborhoods that allow no hunting, wildlife officials estimate the New Jersey deer population to have grown to exceed 175,000.

 

(A) With no natural predators and expanses of green suburban neighborhoods that allow no hunting, wildlife officials estimate the New Jersey deer population to have

(B) With no natural predators and with expanses of green suburban neighborhoods that do not allow hunting, wildlife officials' estimate of the deer population in New Jersey has

(C) With no natural predators and with expanses of green suburban neighborhoods where there is no hunting, the deer population in New Jersey, wildlife officials estimate, has

(D) Without natural predators and no hunting allowed in expanses of green suburban neighborhoods, New Jersey has a deer population that wildlife officials estimate to have

(E) Without natural predators and with expanses of green suburban neighborhoods where there is no hunting, wildlife officials in New Jersey estimate a deer population that has

答案C。

A中说“with no A and B，B的表达有歧义不知道是否和no平行”，所以后面也要加not以明确。

那么D里的without呢？后面时候需要加not?

许仙

以下是引用祝英台在2008-5-5 9:40:00的发言：

50.        (27142-!-item-!-188;#058&003455)

With no natural predators and expanses of green suburban neighborhoods that allow no hunting, wildlife officials estimate the New Jersey deer population to have grown to exceed 175,000.

(A) With no natural predators and expanses of green suburban neighborhoods that allow no hunting, wildlife officials estimate the New Jersey deer population to have

(B) With no natural predators and with expanses of green suburban neighborhoods that do not allow hunting, wildlife officials' estimate of the deer population in New Jersey has

(C) With no natural predators and with expanses of green suburban neighborhoods where there is no hunting, the deer population in New Jersey, wildlife officials estimate, has

(D) Without natural predators and no hunting allowed in expanses of green suburban neighborhoods, New Jersey has a deer population that wildlife officials estimate to have

(E) Without natural predators and with expanses of green suburban neighborhoods where there is no hunting, wildlife officials in New Jersey estimate a deer population that has

答案C。

A中说“with no A and B，B的表达有歧义不知道是否和no平行”，所以后面也要加not以明确。

那么D里的without呢？后面时候需要加not?

我觉得B里的歧义是在With no natural predators and with expanses of green suburban neighborhoods 这个部分，要么就都是without,要么就是都是with no,同样D，Without natural predators and no hunting allowed in expanses of green suburban neighborhoods，hunting前面的no我觉得没有必要。

许仙

以下是引用祝英台在2008-4-25 8:31:00的发言：

53.        (27297-!-item-!-188;#058&003151)

Most vaccines are derived from weakened or killed strains of the same virus that they prevent, unlike the derivation of smallpox vaccine from a different virus altogether.

(A) the derivation of smallpox vaccine from a different virus altogether

(B) smallpox vaccine, which is derived from a different virus altogether

(C) smallpox's vaccine, which gets derived from a different virus altogether

(D) when smallpox vaccine is derived from an altogether different virus

(E) the altogether different virus from which smallpox vaccine is derived

C里边的get是不是不对啊

C里边的get是不是不对啊

C里的smallpox所有格我觉得也不对称，比较前后要对称的。gets感觉不如is好，被动语态很少见这种系动词出现。

许仙

以下是引用祝英台在2008-4-25 12:20:00的发言：

67.        (28133-!-item-!-188;#058&003500)

Scientists say that each of the photographs taken of the Ares Vallis plain by the Mars Pathfinder indicate the overwhelming extent to flooding on the planet billions of years ago and the degree that rocks were scattered by its force.

(A) indicate the overwhelming extent to flooding on the planet billions of years ago and the degree that

(B) indicate that the extent of the floods on the planet billions of years ago was overwhelming and the degree to which

(C) indicate the overwhelming extent of the floods on the planet billions of years ago and the degree to which

(D) indicates the overwhelming extent of the flooding on the planet billions of years ago and the degree to which

(E) indicates the overwhelming extent to flooding on the planet billions of years ago and the degree that

D中的the degree to which 是固定说法还是，which引导定于从句，如果是定语从句to应该是可以放到从句里去的，但这里好像不行?

D中的the degree to which 是固定说法还是，which引导定于从句，如果是定语从句to应该是可以放到从句里去的，但这里好像不行?

the degree to which, to which 是修饰the degree的，to which加上后面的那些是the degree的定语

ericlu

12. After gradual declension down to about 39 hours in 1970, the workweek in the United States has steadily increased to the point that the average worker now puts in an estimated 164 extra hours of paid labor a year.

(D) After gradually declining
    

(E) Following gradually declining

答案是D。

OG的解释说 after是介词 declining是分词。

可是介词后只能跟n/动名词阿。这个分词是怎么回事呢？

介词后可以跟分词

ericlu

以下是引用祝英台在2008-4-21 10:33:00的发言：

194. Presenters at the seminar, one who is blind, will demonstrate adaptive equipment that allows visually impaired people to use computers.
(A) one who
(B) one of them who
(C) and one of them who
(D) one of whom
(E) one of which

答案D. Whom 作介词of 的宾语所以用宾格形式whom。

但是不明白 whom is blind.又是什么从句？

非限制定语