Amongst the most popular books being written today are those which are usually classified as science fiction. Hundreds of【67】are published every year and are read by all kinds of people.【68】, some of the most successful films of recent years have been【69】on science fiction stories. It is often thought that science fiction is a【70】new development in literature,【71】its ancestors can be found in books written hundreds of years ago. These books were often concerned【72】the presentation of some form. of ideal society, a【73】which is still often found in modern stories. Most of the【74】of science fiction, however, have been written within the last hundred years. Books by writers such as Jules Verne and H. G. Wells, to【75】just two well-known authors, have been translated into many languages. 【76】science fiction writers don't write about men from Mars or space【77】stories. They are more interested in【78】the results of technical developments on society and the human mind【79】in imagining future worlds which are a【80】of the world which we live in now. Because of this their writing has obvious【81】undertones (潜在含义). In an age where science fact frequently【82】science fiction, the writers may find it difficult to keep【83】of scientific advances. Those who are【84】clear-sighted to see the way we are going, however, may provide a【85】lesson on how to deal with the problems which society will inevitably【86】as it tries to master its new technology. (68)