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707. Normally a bone becomes fossilized through the action of groundwater, which permeates the bone, washes away its organic components, and replaces them with minerals.
A. which permeates the bone, washes away its organic components, and replaces them
B. which permeates the bone, washes away its organic components, and those are replaced
C. which permeates the bone, washing away its organic components, to be replaced
D. permeating the bone, washing away its organic components, to be replaced
E. permeating the bone, washing away its organic components and replacing them
解析：
考点And平行
A选项which指代前面的the action of groundwater，后面是permeates， washes， replaces三个动作的平行
B选项and后面是those are replaced，和前面的动词不平行
C选项三个动作形式不同，并且缺连词
D选项，句末doing表示修饰前面的句子 a bone becomes fossilized，表示伴随结果，但是逻辑语义不符，此处说的是 the action of groundwater，同时三个平行间也缺连词
E选项，逻辑语义不符，句末doing表示修饰前面的句子 a bone becomes fossilized，表示伴随结果，但是逻辑语义不符，此处说的是 the action of groundwater
答案：A
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