Around the world more and more people are _dangerous sports and activities. Of course there have always been people who have    adventure-those who have climbed the     mountains, explored unknown parts of the world or      in small boats across the greatest oceans. Now, however, there are people who look for an immediate pleasure from a   activity which may only last a few minutes or even   ．
I would consider bungee jumping to be a good example of such an activity. You      from a high place with an elastic(有弹性的)rope——：  …to your ankles. You     at up t0 150  kilometres  an hour until the rope stops you from  _ the ground. It is said that 2 million people around the world have now  _ bungee jumping. Other activities,     most people would say are as dangerous as bungee jumping,   .  _ jumping from tall buildings and      into the sea from the top of high rocks.
Why do people take part in such activities as these? Some psychologists(心理学家) suggest that it is because life in   society has become safe and boring. Not very long ago, people’s lives were constantly in    .They had to go out and hunt for       , and life was a continuous battle for survival.
Nowadays, according to many people, life offers   excitement They live and work in relatively safe condition; they buy food in shops; and there are doctors and nurses to       them if they become ill, The answer for some of these people is t0     danger in activities such as bungee jumping.
A. escaping from   B. taking part in  
C. going in        D. taking in
A.looked up        B. looked into  
C. looked for      D. looked around
A. lowest          B. highest        
C. beautiful       D. wild
A. sailed          B. swam         
C. jumped          D. crossed
A. safe            B. excited         
C. funny           D. dangerous
A. years           B. seconds          
C. hours           D. days
A. jump            B. run             
C.walk   .         D. cross
A. followed        B. tied          
C. brought         D. took
A. go              B.run            
C.fall             D. fly
A. falling         B. running         
C. flying          D. hitting
A. tried           B. looked for       
C. found           D. studied
A. that            B. which            
C. it              D. what
A. hold            B. include          
C. find            D. contain
A. swimming        B. running          
C. diving          D. sailing
A. old             B. modern         
C. past            D. formal
A. safety          B. imperfection .    
C. danger          D. perfection
A. animals         B. food             
C. water           D. dangers
A. few             B. little           
C. much            D. many
A. look at         B. look into         
C. look for        D. look after
A. look for        B. look after        
C. explore        D. find