XI. Compose short dialogues for the following imaginary situations:

1. You know that Leeuwenhoek was not a professional scientist. Yet he corresponded with the Royal Society in London, where he sent his descriptions of what he had seen through his microscope. One day he was visited by one of the members of the Royal Academy. Try to imagine the conversation that might have taken place.

3. You are a teacher of zoology. This is your first lesson on the use of microscope. Instruct the students in its use.

4. Your younger sister comes up to you and asks what a microscope is. Tell her what instrument it is, how it is constructed and what it is used for.

5. You are going to make a report "From Leeuwenhoek to the present". What will you include in it?

6. You are given a microscope without a mirror and asked to examine a leaf of an apple-tree. Will you be able to do it? Discuss it with your friend.