Complete the following passage with the words in the box．Each can be used only once（将下列单词填入空格．每空格限填一词，每词只能填一次）（共8分）

Nowadays more and more people prefer to go fishing or hiking in the woods．Experiencing nature is （46） 　　，but when you're doing this，always keep yourself safe．It's important to remember several basic rules if you don't want to turn a pleasant outing into a（47） 　　．

First，be fully prepared for different weather．Before you set out，always get warm clothes and raincoats ready，just in case!This is especially true in the （48） 　　of travelling in the mountain areas．The weather is really （49） 　　in high mountains．Sometimes you can experience two or three seasons in one day．

Second，（50） 　　a map，a compass，and a flashlight in your bag．Even experienced travelers get lost．Before you start your trip，study the map to get familiar with the area you are going to．The flashlight is important if you do get lost．Many trips that start out in daylight will （51） 　　become nighttime adventures when people can't find their way．

Third，bring a first﹣aid kit and know how to use it．Small cuts can be more serious when there is no doctor（52） 　　．

Finally，tell people where you are going and when you plan to come back．That way，someone will go search for you if troubles（53） 　　．This will increase your chance of being found quickly．