第26题: [单项选择]Passage Two A. It’s a low impact activity and no one wants to do it. B. It helps us practise the same large muscle group rhythmically. C. It’s a dangerous and unendurable exercise. D. It’s not good to the heart. 参考答案:B 答案解析:[解析] 29-32 We think of aerobics as being a high impact activity but actually [29] aerobic