help please. one SC...

redpot

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 tmor appears.

A.
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


The answer is ......E

primefang

1 in that 是标准的引导原因壮语的连词, > because
2 举例只能用 such as , 不能用like
3 tissues 对应前面的they, 同位语

redpot

thank you so much