[填空题]There are several ways you can find out about the countries and places you wish to visit. You can talk to friends who have{{U}} (S1) {{/U}}to these places. Or you can go and see a{{U}} (S2) {{/U}}film about them. Or you can read travel books. It would{{U}} (S3) {{/U}}that there are three kinds of travel books. The first are those that give a{{U}} (S4) {{/U}}, subjective account of travels which the author has actually made himself. If they are informative and have a good{{U}} (S5) {{/U}}then they can be useful to you when you are planning your travels. The second kind are those books whose purpose is to give a purely objective{{U}} (S6) {{/U}}of things to be done and seen. If a well- read, cultured person has written such a book then it’s even more useful. It can be{{U}} (S7) {{/U}}as a selective guide book. The third kind are those books which are called a guide to some place or other.{{U}} (S8) {{/U}}Like the first kind they can be inspiring and entertaining.{{U}}