我国从2014年7月1日起为期两年内，北京、上海、广州、武汉四城市将试点老年人住房反向抵押养老保险，取得经验后向全国推广。我国有绵延上千年的家庭养老文化，不少老人心中仍深植传统“养儿防老”观念，对于住了一辈子的房屋，很多人宁可去世之后留给子女继承，也不愿意抵押养老。因此，真正青睐“以房养老”的老人寥寥无几。这表明（   ）。

①由主观向客观的转化需要具备一定的物质条件

②只有正确动员人民群众，才能真正发挥人们群众变革社会的决定作用

③社会领域的新事物被人们接受往往要经历一个较长的过程

④只有改革才能推动人类社会的发展

    Now you are in a dinosaur ____park. Coming here, you will find a kind of old ____, dinosaur, which died out millions of years ago. In our park, we are happy to show you ____ dinosaurs, which lived in the Jurassic. The four-storied-building-high grass-eating dinosaurs are submissive (温顺的) and kind. You can ____ towards them and touch them. But the ____  of them are dangerous. The four-legged meat-eating dinosaurs are very cruel. Please don't ____ them and don't try to give them food. The ____ here is very thick and full of all kinds of animals that lived in the Jurassic. Without any special____and the leading of the guide, please don't step into it. OK, I'm sure that our park will ____anyone who comes here and you will ____a lot from it.

名著阅读，按要求答题。