完形填空（共20小题；每小题1.5分，满分30分）
阅读下面短文，从短文后所给题目的四个选项（A、B、C、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。
It was just getting dark. There was a touch of fog and I was on a lonely stretch of road. __21__, I was going along cheerfully, thinking about the dinner I would eat when I got to Salisbury .
I was going along __22__ at about thirty-five miles an hour when suddenly I heard a scream, a   __23__ scream ---“Help!” I looked round, but the only __24__ of life was a large, black, rather suspicious—looking（可疑的）car just __25__ a bend in the road about a hundred yards away. That was where the cry had come from. I __26__ speed and went after it. I think the driver saw what I was doing, for he did the same and began to draw __27__ me. As I drew near, the girl’s voice came again, a lovely voice but trembling with __28__.
“Let me go, you coward; you’re hurting me. Oh ! Oh !”
I felt my __29__ boil. The fog was coming down __30__ now, and the countryside was lonelier. I had no __31__ that the murderous guy in the car noticed this. Again came a cry.
“Drop that knife, you fool. Oh !” Then a cry and a groan（呻吟）.
If I was to save her, it was now or __32__. Perhaps even now I was too late. But if I couldn’t save the girl, I would at least try to bring the murderer to __33__. The car was only a couple of yards away now. I drove the bike right across its __34__, and its brakes（煞车）screamed as the driver tried to pull it over and   __35__ into the ditch（沟）at the side of the road. The door of the car was pushed open angrily and a dark, evil-looking fellow stepped out.
“You fool!” he shouted as he came towards me with his fist raised to hit me. But I was __36__ than him. I put all I could into __37__ that would have knocked out Joe Louis. It __38__ him right on the point of the chin; his __39__ slowly bent under him, and he dropped to the ground without a sound. I rushed to the car, w.&w.^  __40__ open the door and looked inside. There was no girl there. Suddenly from the back of the car came a voice.
“You have been listening to a radio play, Murder in Hollywood, with Mae Garbo and Clark Taylor. The news will follow immediately.”
21.   A. And                        B. Though                    C. Therefore                 D. But
22.   A. quietly                            B. quickly                    C. carefully                  D. nervously
23.   A. boy’s                       B. man’s                       C. woman’s                  D. driver’s
24.   A. person                            B. sign                         C. sound                       D. form
25.   A. turning                    B. crossing                   C. going                       D. driving
26.   A. slowed down            B. put on                      C. added to                   D. took up
27.   A. right behind             B. close to                    C. away from                D. near by
28.   A. joy                          B. sorrow                            C. fear                         D. anger
29.   A. tears                        B. heart                        C. face                         D. blood
30.   A. slighter                    B. thicker                            C. lower                       D. harder
31.   A. need                        B. effort                       C. trouble                            D. doubt
32.   A. never                       B. late                          C. ever                         D. then
33.   A. justice                      B. court                        C. lawyer                            D. sentence
34.   A. direction                  B. path                         C. front                        D. nose
35.   A. drove                       B. ran                          C. crashed                    D. sped
36.   A. slower                            B. quicker                    C. taller                        D. heavier
37.   A. an anger                   B. a fist                        C. a beat                       D. a blow
38.   A. caught                            B. struck                      C. knocked                   D. beat
39.   A. chin                         B. fists                         C. knees                       D. body
40.   A. hit                           B. brought                    C. pushed                        D. Pulled