1. Tektites, which may have been propelled to Earth from lunar volcanoes, are much like the volcanic glass obsidian, but their chemical composition is different than any terrestrial lava; they contain far less water than obsidian does and none of its characteristic microcrystals.
(A) is different than any terrestrial lava; they contain
(B) is different than any terrestrial lava’s, containing
(C) is different from that of any terrestrial lava; they contain
(D) differs from any terrestrial lava in containing（C）
(E) differs from that of any terrestrial lava’s, containing
E是不是错在that of any terrestrial lava’s中的's？
如果改成that of any terrestrial lava，对吗？这时候后面这个containning的逻辑主语是Tektites，还是terrestrial lava？
另外，C中的they应该优先指代前面句子的主语，是吗？那就是Tektites，可是意思上不是的，那算明确吗？
谢谢！ | 
