The primary purpose of the passage is to_出国考试答疑器_GMAT

The primary purpose of the passage is to

A、describe the development of new techniques that may help to determine the driving force behind population cycles in lepidoptera

B、present evidence that refutes a particular theory about the driving force behind population cycles in lepidoptera

C、present a hypothesis about the driving force behind population cycles in lepidoptera

D、describe the fluctuating patterns of population cycles in lepidoptera

E、question the idea that a single driving force is behind population cycles in lepidoptera

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