Using bicycles greatly to people’s physical fitness as well as easing traffic jams.
A. substitutes
B. attributes
C. distributes
D. contributes
网友回答
A. substitutes
B. attributes
C. distributes
(答案→)D. contributes
解析:contribute to固定搭配,意为“促成,有助于”。句意为:使用自行车有助于人们的身体健康,并极大地缓解了交通阻塞。substitute意为“代替”;attribute意为“归于,属于”;distribute意为“分配,散布”。