[讨论][原创]og208

208中涉及的such as与 like的区分似乎很微妙, 有谁能详细解释一下吗

不胜感谢

不好意思,现在把题加上

208. Teratomas are unusual forms of cancer because they are composed of tissues such as tooth and bone not normally found in the organ in which the tumor appears.

(A)  because they are composed of tissues such as tooth and bone

(B)  because they are composed of tissues like tooth and bone that are

(C)  because they are composed of tissues, like tooth and bone, tissues

(D)  in that their composition, tissues such as tooth and bone, is

(E)   in that they are composed of tissues such as tooth and bone, tissues

Only E, the best choice, clearly states that teratomas consist of tissues such as tooth and bone, and that such tissues are not normally found in the organ with the teratoma. Clear statement of this fact requires the repetition of tissues to establish the appositive--tissues normally found.... Without such repetition, A and B imprecisely state that the tooth and bone, as opposed to the tissues, are not normally found in the affected organ. Choices B and C alter the meaning with the use of like', that is, they suggest that the tissues are not tooth and bone, but only like them. The confused syntax of D states that their composition, not the tissues, is found in the organ....

这个句子里, like 与such as不是都有"象....."的意思吗

参考一下，希望有帮助

http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=52944

感谢版主, 我终于明白了

自己顶一下

OG说的很清楚:

A and B imprecisely state that the tooth and bone, as opposed to the tissues,
            are not normally found in the affected organ.

我觉得og是说that修饰tooth和bone了，不再修饰tissues.所以后面同位语要补出主语，以表清晰。但是那句as opposed to the tissues，我也不太明白，是说这样就使得tissues变成可以找到的了么？