Reading books is a neat way of c

Reading books is a neat way of coming up with new ideas because one （ ） create all the ideas by oneself.
A、doesn't have to
B、mustn't
C、ought not to
D、shouldn't
【正确答案】：A
【题目解析】：本句意为读书是想出新点子的一个简便易行的办法，因为不用靠自己想出所有的点子。doesn't have to没必要，mustn't一定不，ought not to 和shouldn't不应该。