49. The _____ of the trees in the water was very clear.

　 A. mirror　　 B. sight　　 C. reflection　　 D. shadow

C. reflection.

reflection此处意为“映在水中的倒影”，而不是“影子”或“阴影”，故不能用shadow。其他选择均不合题意。

48. Roses are quite _____ flowers in English gardens.

　 A. ordinary　　 B. common　　 C. usual　　 D. general

B. common.

common(=usual and ordinary; happening of found often and in many places)普通的；常见的；常常发生的；到处可见的：a common experience(普通的经历)；a common tree(常见的树木)。This bird is common throughout Europe.(这种鸟在欧洲很常见。)They can treat most of the common diseases.(他们能治疗大多数常见病。)

usual(=done, found, used or existing most of the time) 经常的，通常的，惯例的，习以为常的；强调时间习惯方面，例如：This is the usual state of the house.(这房子里平常就是这种样子。)

ordinary正常的，普通的，正常的；an ordinary day(平凡的一天)，ordinary people(普通人), a piece of ordinary dance music(一首普通的舞曲)。

general普通的。它与common比较，语气稍强，含有很少例外的意外。

可见本题中用common是最佳的选择。

47. The thief _____ the papers all over the room while he was searching.

　 A. abandoned　　 B. vanished　　 C. scattered　　 D. deserted

C. scattered.

scatter(=throw or put in various directions, or here and there)撒。

abandon放弃，抛弃。desert遗弃(而离开)。vanish消亡，灭亡。本题句意是将小偷在搜寻钱时的情景，所以应选scattered(撒)。

46. In a typhoon, winds _____ a speed greater than 120 kilometers per hour.

　 A. assume　　 B. accomplish　　 C. attain　　 D. assemble

　C. attain.

　　 attain (=succeed in doing or getting) 达到 (目的等) ,取得 (成就等) :I hope you will attain your object, accomplish (顺利) 完成。assume假定, 假设, 承担。assemble集合; 装配。

45. There were no tickets _____ for Friday's performance.

　 A. preferable　　 B. possible　　 C. considerable　　 D. available

　D. available.

　　 available (=capable of being used; that may be obtained) 可利用的; 可以找到的：1) These tickets are available for one month. (这些票的有效期一个月。) 2) Is there a doctor available? (有否可以找到大夫？) 3) A limited number of seats are still available. (仍然还有少量座位。)

44. Probability is the mathematical study of the _____ of an event's occurrence.

　 A. desire　　 B. likelihood　　 C. result　　 D. effect

　B. likelihood

　　 句意：概率是对事件发生的可能性的数学研究。

43. The government's strong action demonstrated its _____ to crush the rebellion.

　 A. energy　　 B. resistance　　 C. courage　　 D. determination

　D. determination.

　determination意为“决心”, 后常接动词不定式作定语。

42. As soon as the children were _____, their mother got them out of bed and into the bathroom.

　 A. woke　　 B. waken　　 C. wake　　 D. awake

　D. awake.

awake adj.醒着的 (作表语) 。Awake, awaken, wake, waken都可以作及物和不及物动词用, 但是awake多用作不及物动词, 其中wake最常用。

41. It was a long time before the cut on my hand _____ completely.

　 A. healed　　 B. cured　　 C. improved　　 D. recovered

　A. healed.

　　 heal 1) 使痊愈, 治愈：The salve will help to heal the wound. (这种药膏能治愈你的伤。) 2) 痊愈 (多指外伤) ：The cut on my leg has healed. (我腿上的伤口以痊愈。) 可见, 本题是heal的第二种用法。cure治疗, 治好; The drug cured my fever. (这种药使我退烧了。) This medicine should cure you of your cold. (这种药定会治好你的感冒。) recover也可以表示“痊愈”, 意为“恢复正常”。例如：1) I think she will recover. (我认为她会痊愈的。) 2) He almost fell ill, but quickly recovered. (他差点病到, 但很快就痊愈了。) 也可以用recovered做表语表示“痊愈, 恢复正常：Are you completely recovered from your illness? (你的病是不是完全好了？)

　　 [注意] recover vi. 用作“痊愈”时, 句子主语通常是人。Improve 改善, 此词无“治疗”或“痊愈”之意。

　　 本题译文：过了很长时间我手上的伤口才痊愈。

40. The final _____ of the play will take place on Monday.

　 A. action　　 B. performance　　 C. view　　 D. sight

　B. performance.

　 performance (话剧的) 一场演出。