36. When Katherine was 10, she _________ . (A) finished Grade 8 (B) started college (C) started teaching Math

40. Which could be the main idea of this article? (A) Johnson was not famous but she used her talent in math and physics in space missions. (B) Johnson had a great talent for math and was an incredible student and teacher. (C) Johnson taught and studied math before working as a human computer for the space programme.