Read the blog and answer the questions.

Book Blog: Science Fiction by Rupert Hutchinson
In this month's blog, I'm going to write about my favourite science fiction writers. (...)

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1 Which two subjects are important in science fiction books?
2 Which science fiction writer has Rupert written about before?
3 Why do the characters in 20,000 Leagues Under the Sea travel across the sea?
4 What do they find?
5 Who are the Morlocks in The Time Machine?