完形填空（共20小题，每小题1.5分,满分30分）
阅读下面短文，掌握其大意，然后从1—20题各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。
He was 11 years old and went fishing every chance he got from the dock at his family’s cabin on an island in the middle of a New Hampshire lake. On the day __1__ the bass (鲈鱼) seasonopened, he and his father were fishing early in the evening, __2__ sunfish with worms. Then he tied on a small lure (鱼饵) and practiced casting. When his pole __3__, he knew something huge was __4_. His father watched __5__ as the boy skilfully worked the fish alongside the dock. Finally, he very carefully lifted the __6__ fish from the water. It was the largest one he had ever seen, __7__ it was a bass. It was 10 P.M.-- two hours before the season opened. The father looked at the fish, then at the boy.
“You’ll have to __8__, son,” he said.
“Dad!” cried the boy.
“There will be other fish,” said his father.
“Not as big as this one,” cried the boy.
__9__ no one had seen them, nor could anyone ever know what time he caught the fish, the boy could __10__ by his father’s firm voice that the decision was __11__. He slowly worked the hook out of the lip of the huge bass and lowered it into _12__. The creature moved its powerful body and __13__. The boy thought that he would never again see such a great fish.
That was 34 years ago. Today, the boy is a successful architect in New York City. And he was __14__. He has never again caught such a magnificent fish as the one he __15__ that night long ago. But he does see __16__ fish again and again every time he comes up against a question ofprinciples. As his father taught him, principles are simple matters of right and wrong. It is only the practice of principles__17__ difficult. Do we __18__ when no one is looking? 
We would if we __19__ to put the fish back when we were young. For we would have learned the truth. The decision to do right lives __20__ in our memory. It is a story we will proudly tell our friends and grandchildren.
1．A．until                      B．when                  C．after                   D．before
2．A．providing              B．catching             C．feeding               D．supplying
3．A．bent over              B．came up             C．turned over         D．broke down
4．A．on the other end    B．on the other hand C．on one hand         D．at the either side
5．A．with anxiety          B．in surprise           C．with admiration   D．for fear
6．A．delighted              B．frustrated            C．frightened           D．exhausted
7．A．and                       B．but                     C．however             D．yet
8．A．bring it home        B．put it aside          C．put it back          D．pick it up
9．A．Even though       B．Now that          C．Ever since          D．In case
10．A．tell                     B．say                     C．speak                  D．talk
11．A．passed                B．changed              C．fixed                   D．refused
12．A．the wide container                               B．the broad sea
C．the black water                                    D．the small river
13．A．fled                    B．disappeared         C．floated              D．swam
14．A．wrong                 B．right                   C．satisfactory         D．pleased
15．A．landed                 B．saw                    C．cast                    D．threw
16．A．a different           B．many big             C．even bigger          D．the same
17．A．which is              B．it is                    C．that is                 D．this is
18．A．do wrong           B．do right              C．do harm             D．do good
19．A．were taught        B．told                    C．were let              D．ordered
20．A．freshly               B．fresh                C．clearly                D．strongly