问题 单项选择题

有人说:“哺乳动物都是胎生的。”
以下哪项最能驳斥上述判断( )

A.也许有的非哺乳动物是胎生的。
B.可能有的哺乳动物不是胎生的。
C.没有见到过非胎生的哺乳动物。
D.非胎生的动物不大可能是哺乳动物。
E.鸭嘴兽是哺乳动物,但不是胎生的。

答案

参考答案:E

解析: 要反驳某一个命题,也就是要确定某一个命题是假的。题干中是一个全称肯定命题,根据对当关系,当一个特称否定命题为真时,相对应的全称肯定命题一定假,所以,需要寻找一个特称否定命题来反驳题干。如果选项E为真,那么可以推出一个特称否定命题:有些哺乳动物不是胎生的。选项C和D都支持题干,A对题干没有提出质疑,B项虽能削弱题干(只是“可能”),但是远不如E项有力。

完形填空

第二节:完形填空(共20小题;每小题1分,满分20分)

请认真阅读下面短文,从短文后各题所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。

Before India gained independence (独立), a few young men from the villages wanted to free India from the foreign rule; they wanted the British to quit India. They needed material wealth to  36  the British out of India, so they started collecting  37  in the Indian villages.

One day, they got encouraged to collect  38   things as well. They went from door to door carrying a huge bag, which gradually was  39  with money and gifts. As they went, a one-legged beggar kept  40  them. The young men did not mind.

At the  41  of the day, they entered a house to see  42  they had collected. The beggar also wanted to enter, but since he was not a member of the group, they did not  43  him in. The beggar said to them: “I walked such a  44  distance right behind you. You want freedom; I also want freedom. India is not only your motherland. It is also my motherland.”

45 , the young men got mad and told the beggar to go away. Then one of the men felt  46  for him, so they decided to  47  him the things they had collected.  48  the beggar was looking at the gifts in their bag, most of them were showing no  49  for him. Then suddenly the beggar opened up the bag that he had been carrying. It  50  a few coins and some rice. He threw all the contents into their bag at once.

At the  51  of this, immediately all the members of the revolutionary group started dropping  52  of gratitude (感激), because he had  53  all that he had to their cause. On that day, they had gone to visit so many rich families, who had given them next to  54 ; but this beggar had given them everything that he had! They were deeply  55  by the beggar’s contribution.

36. A. drive                         B. grow                       C. help                        D. pick

37. A. food                          B. money                    C. papers                   D. seeds

38. A. military                    B. material                C. mysterious           D. cultural

39. A. tired                          B. satisfied                C. filled                       D. covered

40. A. following                  B. cheating                C. calling                    D. beating

41. A. beginning                B. end                         C. front                       D. middle

42. A. how                           B. what                       C. where                    D. when

43. A. stop                          B. drop                        C. allow                      D. promise

44. A. short                         B. near                        C. long                        D. little

45. A. At last                      B. At first             C. At a time               D. In that case

46. A. necessary                B. patient                            C. thankful                 D. sorry

47. A. trouble                     B. serve                      C. show                      D. excite

48. A. Since                         B. While                      C. If                              D. Although

49. A. interest                    B. courage                 C. respect                  D. disappointment

50. A. included                   B. consisted              C. held                        D. contained

51. A. thought                    B. sight                       C. sound                     D. moment

52. A. laughter                            B. difference             C. truth                       D. tears

53. A. taken                        B. given                      C. wasted                            D. lost

54. A. something               B. nothing                  C. everything            D. anything

55. A. moved                      B. removed                C. excited                   D. surprised

单项选择题