完形填空（共20 小题；每小题1分；满分20分）
阅读下面短文, 掌握其大意, 然后从 21～40 各题所给的四个选项 (A、B、C和D) 中, 选出最佳选项, 并在答题纸上将该选项标号涂黑。
Once upon a time, there was a herd offorest deer. In this herd was a wise and respected    21  , tricky in the ways of deer. He taught the tricks and strategies of   22   to the young fawns.
One day, his younger sister brought her son to him, to be taught   23   is so important for deer. She said, "Oh brother teacher, this is my son. Please   24   him the tricks and strategies of deer." The teacher said to the fawn, " 25  , you can come at this time tomorrow for your first lesson."
  26  , the young deer came to the lessons as he was   27   to. But soon, he became more interested in playing with the other young bucks  28  does（雌鹿）. He didn't  29  how dangerous it   30    be for a deer who learned nothing but deer games. So he started cutting classes. Soon he was playing hooky all the time.
  31  , one day the fawn who played hooky   32  in a snare and was trapped. Since he was missing, his mother   33  . She went to her brother the teacher, and asked him, "My  brother, how is my son? Have you taught your   34   the tricks and strategies of deer?"
The teacher replied, "My  sister, your son was   35  and unteachable. Out of respect for you, I tried my best to teach him. But he did not want to learn the tricks and strategies of deer. He played hooky! How could I   36   teach him? You are obedientand faithful, but he is not. It is useless to try to teach him."
Later they heard the   37   news. The naughty fawn who played hooky had been   38 and killed by a   39  . He skinned him and took the meat home to his family.
The moral is:   40   can be learned from a teacher by one who misses the class.

A．leader B．student C．pupil D．teacher

A．survival B．approval C．arrival D．travel

A．that B．what C．how D．it

A．learn B．study C．teach D．bring

A．How simple B．Very well C．Quite easy D．What a pity

A．At first B．For the first C．The first time D．Firstly

A．preserved B．thought C．supposed D．suspected

A．nor B．or C．but D．and

A．realize B．orgnize C．admit D．clarify

A．should B．could C．would D．must

A．Generally B．Luckily C．However D．Unfortunately

A．banned B．caught C．stepped D．broke

A．fainted B．delighted C．shocked D．worried

A．uncle B．aunt C．nephew D．niece

A．dishonest B．disobedient C．inconvenient D．unbelievable

A．possibly B．likely C．necessarily D．logically

A．rare B．good C．sad D．popular

A．bought B．kidnapped C．transported D．trapped

A．hunter B．researcher C．advocator D．settler

A．Anything B．Nothing C．Something D．Everything