Which of the two following patterns does the author use to explain the new definition of heroes in Text A, Unit 4? ( ) A.Problem-solution. B.Cause-effect. C.Question-answer. D.Comparison and contrast.
正确答案：CD
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Which of the two following patterns does the author use to explain the new definition of heroes in Text A, Unit 4? ( ) A.Problem-solution. B.Cause-effect. C.Question-answer. D.Comparison and contrast.
正确答案：CD
