cycling is a fantastic way to burn a few calories and save some money, there still exist r

发布时间：2020-08-17 05:28:06

      cycling is a fantastic way to burn a few calories and save some money, there still exist risks．
A. Since
B. While
C. As
D. When

网友回答

A. Since
(答案→)B. While
C. As
D. When
解析：此处Since 自从；While 尽管；As因为；When当……的时候。句意：尽管骑自行车是燃烧热量的奇妙的方法，但也存在风险。根据句意选B。
以上问题属网友观点，不代表本站立场，仅供参考！