The twenty test of pronouns from Vision 1 | Lesson 3: The Value of Knowledge
لطفا برای اطمینان از عملکرد و تجربه بهتر از مرورگرهای مدرن و به روز مانند کروم یا فایرفاکس استفاده کنید.
Some scientists become very rich and famous. Many people around the world may remember their names and faces. But this is not what they call ‘success’. They feel successful when they solve problems or find facts.
What is the main idea of the reading?