教科书课本上的经典句子 对教科书中3个句子有疑问【有追加】
（1）Does a cultural relic always have to be rare and valuable?Is it enough to have survived for a long time?Q1:既然“ a cultural relic ”作单数讲，那为何是 “h
（1）Does a cultural relic always have to be rare and valuable?Is it enough to have survived for a long time?Q1:既然“ a cultural relic ”作单数讲，那为何是 “h