2.　 A. unchanged　 B. unpleasant　 C. unfriendly　　 D. unmoved

1.　 A. sought　　　 B. presented　　 C. exchanged　　 D. obtained

55. D. 主旨大意题。 本文第一自然段就已点明本文的主题思想。

[写作参考范文]

　　 The purpose of this English competition is to improve the ability of listening and speaking and form a good habit of reading books. We have to make it clear to you that the speech time should be within 5 minutes. If you would like to win a place in this competition, language fluency and accurate pronunciation will be of vital importance. Finally, may this speech competition succeed. Wish you good luck..

54. C. 推理判断题。 根据全文所述，且在第一和第二自然段中都有明确论述。

53. A. 细节理解题。 由“the students were asked to rate the personality of “Person A”based on a particular deion.”一句可知。

52. B . 细节推理题。答案见第二自然段最后一句话。

51. C. 细节推理题。 由“he physical sensation(感觉) of warmth encourages emotional warmth, while a cold drink in hand prevents you from making unwise decisions”一句可知。

50. A. 推理判断题。 通观全文，有支持者有反对者，所以是有争议的。

D.

49. B. 推理判断题。由文章第一自然段及最后一段最后一句话可知。

48. C . 细节理解判断题。由第六自然段第一句话可知A项错误，由第二自然段第一句话可知B项错误，由第五自然段可知C项正确，由第六自然段第二句话可知D项错误。