9. Universities should be the center of culture.
大学应该是文化的中心。
还能这样说：
The center of culture should be universities.
Cultural center should be the universities.
应用解析：
centre on/at 集中于；使放在……正中
10. Knowledge is the most precious thing in the world.
知识是世界上最珍贵的东西。
还能这样说：
The most precious thing in the world is knowledge.
Knowledge is the most valuable thing around the world.
谚语：
A little knowledge is a dangerous thing.
一知半解是危险的。
11. Reading can improve your temperament.
阅读可以改善你的气质。
还能这样说：
Reading can perfect the qualities in you.
Reading can elevate your temperament.
12. He spent some time reading several pages every night.
他每晚总要读几页书。
还能这样说：
He spared some time on reading some pages each night.
Every night, he was free around some time on reading several pages.