Câu hỏi:

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It is divided into five different parts: the Pacific, Atlantic, Indian, Antarctic and Arctic Oceans.

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Choose the word whose underlined part has a different pronunciation from the others in each group

Choose the word whose main stress is placed differently from the others in each group

Today’s scientists have overcome many of the challenges of the depth by using more sophisticated tools

Choose the word whose underlined part has a different pronunciation from the others in each group