阅读下面短文，从短文后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，并在答题卡上将该项涂黑。

Some years ago on a hot summer day in south Florida a little boy decided to go for a swim in the lake behind his house.

He flew into the water, not 　36 that as he swam toward the middle of the lake, an alligator (短吻鳄) was swimming toward the shore. His mother in the 　37 was looking out of the window and saw the two as they got closer and closer together. In great 　38 , she ran toward the water, 　39 to her son as loudly as she could. 　40 her voice, the little boy became

41 and made a U-turn to swim to his mother. It was too 　42 . Just as he got to her, the alligator 　43 him.

From the dock, the mother caught her little boy by the 　44 just as the alligator caught his legs. That began an incredible war between the two. The alligator was much 　45 than the mother, but the mother was much too 　46 to let go. A farmer happened to 　47 by, heard her screams, raced from his truck, took aim and 　48 the alligator.

Remarkably, after weeks and weeks in the hospital, the little boy 　49 . His legs were terribly scared by the 　50 of the animal. And, on his arms, were deep scratches(抓痕) where his mother’s 　51 dug into his flesh in her effort to hang on to the son she loved.

The newspaper reporter, who 　52 the boy, asked if he would 　53 his scars(伤疤) to him. The little boy lifted his pant legs. And then, with obvious 　54 , he said to the reporter, “but look at my arms. I have great 　55 on my arms, too. I have them because my Mom wouldn’t let go.”

36.A. deciding　　　　　　　 B. realizing　　　　　　　　　 C. believing　　　　　　　　　 D. pretending

37.A. car　　　　　　　　　　 B. boat　　　　　　　　　　　　 C. yard　　　　　　　　　　　　 D. house

38. A. surprise　　　　　　 B. excitement　　　　　　C. fear　　　　　　　　　　D. disappointment

39.A. shouting　　　　　　　 B. whistling　　　　　　　　　 C. singing　　　　　　　　　　 D. talking

40.A. Hearing　　　　　　　 B. Recognizing　　　　　　 C. Ignoring　　　　　　　　　 D. Missing

41.A. angry　　　　　　　　　 B. hopeless　　　　　　　　　 C. alarmed　　　　　　　　　 D. interested

42.A. early　　　　　　　　　 B. late　　　　　　　　　　　　　 C. slow　　　　　　　　　　　　 D. far

43.A. ate　　　　　　　　　　　 B. saw　　　　　　　　　　　　 C. heard　　　　　　　　　　　 D. reached

44.A. head　　　　　　　　　 B. hands　　　　　　　　　　　 C. arms　　　　　　　　　　　 D. legs

45.A. faster　　　　　　　　　 B. heavier　　　　　　　　　　 C. weaker　　　　　　　　　　 D. stronger

46.A. surprised　　　　　　 B. determined　　　　　　　 C. terrified　　　　　　　　　 D. satisfied

47.A. drive　　　　　　　　　 B. fish　　　　　　　　　　　　 C. live　　　　　　　　　　　　　 D. dive

48.A. cut　　　　　　　　　　 B. shot　　　　　　　　　　　　 C. fed　　　　　　　　　　　　　 D. caught

49.A. retired　　　　　　　　 B. survived　　　　　　　　　 C. died　　　　　　　　　　　　 D. escaped

50.A. visit　　　　　　　　　　 B. kiss　　　　　　　　　　　　 C. attack　　　　　　　　　　　 D. protection

51.A. words　　　　　　　　 B. palms　　　　　　　　　　　 C. hands　　　　　　　　　　　 D. fingernails

52.A. saved　　　　　　　　　 B. cured　　　　　　　　　　　 C. admired　　　　　　　　　 D. interviewed

53.A. leave　　　　　　　　　 B. give　　　　　　　　　　　　 C. show　　　　　　　　　　　 D. describe

54.A. pride　　　　　　　　　 B. pain　　　　　　　　　　　　 C. effort　　　　　　　　　　　 D. guilty

55.A. scars　　　　　　　　　 B. patterns　　　　　　　　　 C. designs　　　　　　　　　　 D. rings