有2道关于名词性从句和名词之间的选择问题

Joseph_lin

6.    (24681-!-item-!-188;#058&001533)

From studies of the bony house of the brain, which is the cranium, located in the back of the skull,
come what scientists know about dinosaur brains.

(A) From studies of the bony house of the brain, which is the cranium, located in the back of the
skull, come what scientists know about dinosaur brains.
(B) The knowledge that scientists know about dinosaur brains comes from studies of the bony
house of the brain, located in the back of the skull, that is, the cranium.
(C) The knowledge of dinosaur brains that scientists have come from studies of the bony house of
the brain, which is located in the back of the skull and is called the cranium.
(D) What scientists know about dinosaur brains comes from studies of the cranium, the bony house
of the brain located in the back of the skull.
(E) Located in the back of the skull is the cranium, the bony house of the brain, and it is from studies
of this that scientists know what they know about dinosaur brains.  
下面是对B的解释：
(B) The knowledge that scientists know about…表达方式罗嗦；过去分词结构located…修饰对象不
清楚；that is指代不清楚。

17. (25335-!-item-!-188;#058&002335)

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--better control and possibly
eradication of infections like  
下面是对A的解释：
(A) something代替名词从句，简洁；the other结构不完整，应该是one… the other搭配。如果能用名词替代一个名词性从句，优先选名词（比如something, probability, likelihood等）。

这两道题前一道说用名词代替名词性从句罗嗦，后一道说用名词代替名词性从句好，到底应该是哪个呢？我个人认为用名词和名词性从句应该都可以的，所以应该用其他地方来判断答案选什么，望牛牛帮忙解答

chasekai

这个不是绝对的判断标准，不同的语义下就算有的用了名次性从句也不一定简介，不用也不一定不简洁，要看情况而定

kikisunflower

楼主不是都写出来规则了吗

GMAC的偏好：

如果能用名词替代一个名词性从句，优先选名词，比如something, probability, likelihood等

第一个题里面The knowledge that scientists know about…，knowledge和know语义也重复

第二个题里面，C答案不也是个定语从句吗，怎么就比A简洁了。。。觉得还是the other的问题吧