2019-2020学年人教版高中英语选修7同课异构课件:Unit 2 Robots 单元小节 同课异构(5)
2019-2020学年人教版高中英语选修7同课异构课件:Unit 2 Robots 单元小节 同课异构(5)第4页

1939 1942- 1945

Began having stories published in science fiction magazines

Gained master’s degree in chemistry.

Finished working in candy store.

Got married

Worked as junior chemist, Philadelphia Navy Yard

Got PhD in chemistry.

1941

1948

1942