Fire can help people in many ways. For instance， fire can _1_ water， warm your house， give light and cook food. But fire can also be very _2_. Big fire can burn trees， houses， animals or people， which can bring serious injuries and even lead to many _3_. Sometimes， big fires can destroy the whole forest and cause great economic _4_.
　　Nobody knows _5_ how people began to use fire. But there are many interesting _6_   stories about the first time a man or woman started a fire. One ancient story from Australia _7_about a man who went up to the sun and brought fire down a long long time ago.
　　Today people know how to _8_ a fire with matches. Children sometimes like to _9_ with them， which can be very _10_. One match can burn a piece of paper， and _11_ it might burn a house. A _12_ fire can turn a big fire very quickly. So you must use matches _13_.
　　Fires _14_ people every year. From time to time， its reported on television that a fire has    _15_ in a factory or company where a number of people lost their lives. Some fires happened by accident while on some occasions fires are set _16_ to achieve a certain intention. Whatever the case， it goes without saying that great fires tend to burn down almost everything， _17_ away lives as well as their possessions （財产） or leaving some people _18_.
　　So be careful with fire. If its used _19_， it will help you greatly. However， if you are careless and ignore fire， it may _20_ you.
　　1. A. heat                  B. cool               C. freeze                  D. carry
　　2. A. useful                 B. wonderful         C. harmful                 D. hopeful
　　3. A. changes              B. deaths                  C. mistakes                D. problems
　　4. A. losses                B. development      C effects                   D. difficulty 　　5. A. probably             B. exactly            C. reasonably              D. totally
　　6. A. serious          B. frightening        C. old                      D. modern
　　7. A. tells                 B. comes            C. hears                    D. knows
　　8. A. stop                  B. burn               C. put                      D. make
　　9. A. play                  B. chat               C. communicate           D. share
　　10. A. meaningless        B. dangerous          C. attractive               D. interesting
　　11. A. only                B. ever                C. rather                  D. then
　　12. A. gradual             B. small               C. terrible             D. huge
　　13. A. carefully            B. thoughtlessly      C. fashionably        D. patiently
　　14. A. kill                  B benefit       C. help                     D. frighten 　　15. A. rushed into         B. broken out        C. come across            D. found out
　　16. A. accidentally  B. occasionally       C. designedly         D. normally
　　17. A. taking              B. passing                 C. washing            D. going
　　18. A. selfless             B. homeless          C. useless                  D. endless
　　19. A. frequently          B. properly     C. suddenly                D. slightly
　　20. A. cover              B. fight               C. lose                     D. hurt