从前有个愚人，有一天想上是上去买双新鞋。他便先用之子把脚量了量。拿了根稻杆，记下尺码。 可是因为急于赶路，把稻杆忘在家里了。他来到市上，找到了卖鞋的摊子，摸了摸口袋，记尺码的稻杆不见 了，就对卖鞋的说：“尺码忘家里了，不晓得大小，让我回家拿尺码去!”说罢，拔腿就跑。他急急忙忙回家拿了那根稻杆，又急急忙忙赶回市上来 ，一来一去，花了很多时间。等他赶回市上，天已晚了，集市已经散了。他白忙了一阵，还是没有买到鞋子，那时，有人问他： “你是给自己买鞋子，还是替别人买” 愚人回答说：“我自己穿的呀!”那人又问他：“那么，你身上不是长着脚么又何必带尺码呢!”

A．The neurons used to build the memory are a depletable resource.
B．The reason of memory loss as one grows older is that the neurons are worn out with the increase of age.
C．New memories do not need the supply of new neurons in the brain.
D．All of above.

A．it was a nationwide network of veterans and their supporters founded in 1987 that affiliated to Rolling Thunder National.
B．It was an organization founded in 1995 that works year-round for veterans’ fights.
C．It was named Rolling Thunder because masses of bikes descending on Washington would literally sound like Rolling Thunder.
D．It was named Rolling Thunder because it was the code name for the bombing campaign over North Vietnam during the Vietnam war.