Generally speaking, if strictly following the instructions, the electric bike is not as dangerous as reported.
A. riding
B. being ridden
C. to be ridden
D. ridden
网友回答
A. riding
B. being ridden
C. to be ridden
(答案→)D. ridden
解析：句意：句意：一般来说，如果严格按照说明书来骑的话，电动自行车不会象报导的那样危险。这句话的条件句是省略句，完整是：if the electric bike is ridden strictly following the instructions,当主从句的主语一致的时候，可以省略从句的主语和be动词，所以选D。