补全对话

A: Hello, Mike! Have you heard of Inventors' Day?

B: What is that?

A: It is held to help people remember inventors.

B:

A: Well, different countries celebrate it on different days of the year.

B: Such as?

A: It is the birthday of the inventor Hedy Lamarr.

B: Oh, I know her.

A: Yes. In the USA, it is known as National Inventors' Day.

B: I remember the great inventor Thomas Edison was born on that day.

A: That's right. You have a good memory.

A. When is it celebrated? B. She was also an actress. C. Some inventions are useful. D. No, I have never heard of it. E. It is celebrated on February 11. F. Thomas Edison is really a great inventor. G. Inventors' Day in the German-peaking countries is celebrated on November 9.