This passage mainly discusses ______.A.two techniques used for training elephantsB.the unh

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This passage mainly discusses ______.

A.two techniques used for training elephants

B.the unhumane method used in training elephants

C.how to train the elephant

D.through the tough method we cannot train the elephant successfully

热搜:关于氨基酸代谢错误的论述是_________。