单选题 There is no doubt that doing some physical exercise in fresh air will do some good to one"s health.
【正确答案】 B
【答案解析】[解析] 本题解题关键在于对There is no doubt that和physical exercise的翻译。There is no doubt that为固定句式,意为“毫无疑问”。physical exercise为固定搭配,意为“体育锻炼”,在此短语中physical意指“身体上的”,而非“物理上的”。