Gail and his dog,Sam,are standing at the street corner .They're waiting
Gail and her dog,Sam,are standing at the street corner.They're waiting for the cars to go by.They want to go __36__ the street.She is waiting for Sam to decide when they cross.
__37__ blind people use special,trained (受過訓練的) dogs to help them tell when and where they would go.But not every dog can do__38__.A dog for the blind must be clever.The dog must be __39_ at a special school.He is taught to walk __40__ the trainer's legs.He is taught to walk __41__ his trainer does.
The blind __42__ goes to the school,too.He practices with the dog.He holds the leather belt (皮帶) around the dog's neck tightly.__43__ he feels the dog's movements and knows when and where to __44__.
At the street corner Sam doesn't watch the __45__.It's not because he's careless.It's just because dogs can't __46__ red lights from green ones.He is trained to watch the cars,and tell _47__ the time is for him and Gail to cross.
Sam is __48__ to Gail.He does her seeing for her.He keeps her __49__ danger.But Sam is not only Gail's __50__.He's her best friend,too.
( )36.A.through B.over C.across D.past
( ) 37.A.Any B.All C.No D.Some
( ) 38.A.one B.it C.these D.those
( ) 39.A.told B.asked C.trained D.helped
( ) 40.A.close to B.far from C.in front of D.behind
( ) 41.A.faster than B.slower than C.not so fast as D.as fast as
( ) 42.A.man B.person C.child D.woman
( ) 43.A.In this way B.By the way C.On the way D.Along the way
( ) 44.A.jump B.run C.walk D.drive
( ) 45 .A.people B.policemen C .traffic lights D.cars
( ) 46.A.speak B.talk C.say D.tell
( ) 47.A.when B.what C.where D.which
( ) 48.A.polite B.kind C.important D friendly
( ) 49.A.in B.out of C.with D.inside
( ) 50.A.eyes B.ears C.hands D.feet