The passage is primarily concerned with_出国考试答疑器_GMAT

The passage is primarily concerned with

A、 evaluating the effect of climate on the growth of trees of different species

B、 questioning the validity of a method used to study tree-ring records

C、 explaining how climatic conditions can be deduced from tree-ring patterns

D、 outlining the relation between tree size and cell structure within the tree

E、 tracing the development of a scientific method of analyzing tree-ring patterns

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