1. 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
选E, 没问题。但想问一下 in that 和 because 的用法,有区别吗。其他条件相同,是because优先吗?
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