Are you a man or a mouse? When people ask this question they want to know 31    you are a   32   person or a coward(懦夫). But you will never really know the answer to this question  33  you are tested in real life. Some people  34  they are brave but when they come face to face with real  35 , they act like cowards. Others think of themselves as cowards, but when they meet danger, they act like  36 .
Lenny had always thought of himself as a  37  person. He got worried before examinations. He worried about his job and health. All he wanted in life was to be safe and healthy.  38 , on January 15^th, 2002, a plane crashed into the Potomac River in Washington. Lenny went to the river to see what was happening. He saw a woman in the  39  water. Lenny did not feel afraid. He kept very  40  and did a very dangerous thing. He jumped into the Potomac, 41  to the woman, and kept her head  42  the water. Seventy-eight people died that day. Thank to Lenny, it was not  43 .
When you are in a very  44  situation and feel afraid, the body automatically produces a chemical in the blood. The chemical is called adrenalin(肾上腺素). 45 adrenalin in the blood system, you will feel stronger and stronger and are  46 to fight or run away. However, when you are absolutely terrified, the body can produce too much adrenalin. When this  47 , the muscles become very hard and you find you  48  move at all. You are then paralyzed(使瘫痪，使麻痹) with fear. This is  49  when we are very frightened, we sometimes say we’re “petrified”, which means “stone”. We are    very frightened 50  we become stonelike.

A．how B．neither C．whether D．either

A．brave B．real C．hard D．certain

A．when B．until C．after D．once

A．realize B．find C．think D．agree

A．life B．question C．mouse D．danger

A．soldiers B．mice C．heroes D．cowards

A．useful B．brave C．nervous D．terrible

A．So B．Therefore C．Then D．Actually

A．fresh B．poisonous C．warm D．ice-cold

A．nervous B．calm C．frightened D．excited

A．went B．helped C．spoke D．swam

A．in B．under C．above D．from

A．an accident B．a mistake C．seventy-eight D．seventy-nine

A．dangerous B．comfortable C．different D．favorable

A．With B．Without C．For D．Like

A．afraid B．unable C．ready D．anxious

A．gets B．disappears C．happens D．goes

A．needn’t B．can’t C．mustn’t D．shouldn’t

A．where B．how C．because D．why

A．that B．for C．such D．so