本讲内容在高考中所占比重不大，纵贯近几年的高考形式对涉及到有关概念的某些计算要求降低，但试题中具有一定的灵活性、机动性。

预测07年高考：

(1)对于理科生来讲，对随机事件的考察，结合选修中排列、组合的知识进行考察，多以选择题、填空题形式出现；

(2)对概率考察的重点为互斥事件、古典概型的概率事件的计算为主，而以实际应用题出现的形式多以选择题、填空题为主。

3．通过实例，理解古典概型及其概率计算公式，会用列举法计算一些随机事件所含的基本事件数及事件发生的概率。

2．通过实例，了解两个互斥事件的概率加法公式；

1．在具体情境中，了解随机事件发生的不确定性和频率的稳定性，进一步了解概率的意义以及频率与概率的区别；

53. It was ____ that she couldn’t finish it by herself.

　　　 A. so difficult a work　　 B. such a difficult work　 C. so difficult work　 D. such difficult work

52. ____ difficult the task may be, we will try our best to complete it in time.

　　　 A. No matter 　　　 B. No wonder　　　　 C. Though　　　　　　 D. However

51. He will come to call on you the moment he ____ his painting.

　　　 A. will finish　　　　　 B. finished　　　　　　 C. has finished　　　　　　　 D. had finished

50._____, Mother will wait for him to have dinner together.

A. However late is he 　　　　　　　　 B. However he is late

C. However is he late 　　　　　　　　 D. However late he is

49. After the war, a new school building was put up _____ there had once been a theatre.

A. that　　　　　　　　　 B. where　　　　 　　　 C. which　　　　 　　　 D. when

48. If we work with a strong will, we can overcome any difficulty, _____ great it is.

A. what　　　　　　　　 B. how　　　　　　　　　 C. however　　　　　　 D. whatever