阅读下面短文，掌握其大意，然后从每小题所给的A、B、C、D四个选项中，选出一个最佳选项。
School education is very important and useful. Yet no one can 1 everything at school and a teacher can't teach his students everything they want to know. His 2 is to show his students how to learn. He teaches them how to read 3 how to think. So much more is to be learnt outside school by the students 4.
It is always more 5 to know how to study by oneself. It is quite 6 to learn something, but it is difficult to use it to solve problems. Great inventors (发明家) don't get everything 7 school, but they still can 8 many things and change the world a lot.
How can the inventors do all of these? One of the answers is: they 9 how to study. A lot of things are not learnt in the classroom. They get a lot of knowledge by reading outside school. They work hard and never 10 their dreams.
