in that& because.未见讨论该题中的区别--OG10-Q 208

venus2elva

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）

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

A除了缺省同位语导致的逻辑错误，在这里的because和in that的使用是否有玄机呢？
求指教，多谢。

myungryong

because 和 in that 意思表达上是一样的
但是用because和 in that 都可以用的时候because 优先于 in that（OG12 上指出 in that 是一种过时复杂的用法）
但这只是相对性错误 这道题里 由于ABC都是绝对性错误 答案只能是 用in that（虽然 in that 复杂）表达的E

venus2elva

多谢。