这道题为什么选A??

grounds(注意要用复数)是指一种说法、一种信仰、或一个动作的事实或逻辑根据。而reason是一个动作、决定、或信仰的依据或动机。给你几个例子看你能不能感觉出不同：1。Top 10 reasons to believe that China will win the World Cup。2。This is the single most important reason for believing in God。3。There are substantial grounds to believe that a crime has been committed。4。We have reasonable grounds to believe that the child is not receiving proper care。从上面的例子看,reason多指的是动机或主观依据,而grounds多指事实依据。所以选A