化简62-18-(12)0．

在一个布口袋中装有只有颜色不同，其它都相同的白、红、黑三种颜色的小球各1只，甲乙两人进行摸球游戏；甲先从袋中摸出一球看清颜色后放回，再由乙从袋中摸出一球．

（1）试用树状图（或列表法）表示摸球游戏所有可能的结果；

（2）如果规定：乙摸到与甲相同颜色的球为乙胜，否则为负，试求乙在游戏中能获胜的概率．

在一个乡级小学同时出现2例发热、出疹病人，经血清学检查，麻疹IgM阳性，证实为麻疹病例。为有效的控制疫情蔓延和暴发，最有效的措施是（）。

A.隔离患者

B.针对传播途径，保持公共场所的空气流通，空气消毒

C.一定年龄范围内的易感者实施麻疹减毒活疫苗的应急接种，阻断流行

D.流行时给予儿童高剂量的维生素A

E.口服板蓝根

前列腺素衍生物Latanoprost（适利达）的降眼压机制在于（）。

A.减少房水分泌

B.开放小梁网

C.浓缩玻璃体

D.增加巩膜葡萄膜通道房水外流

E.增加视网膜脉络膜通道房水外流

完形填空（共20小题；每小题1.5分，满分30分）

阅读下面短文，掌握其大意，然后从短文后所给各题的四个选项（A、B、C和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

There was a stranger at my doorstep this morning. I was a little __36__ at first because my parents warned me not to talk to strangers, __37__ he seemed to be a fellow student in my college so I began to calm down soon after.

__38__ in old but neatly pressed clothes, the tall boy began explaining his __39__. He told me about his school fees and said that the time __40__ his exam was approaching. Though his grades were excellent, he would not be __41__ to take his exams if he failed to __42__ the money for all of the tuition fees. He was studying Computer Applications in my city. __43__ I had friends studying the same course in my college, __44__ meant that I could ask them all about him.

The boy was still $ 2,500 short of the $ 30,000 that his tuition __45__. He was having a hard time, and he had a bad family situation __46__. I didn’t have much money, so I gave him an __47__ foreign book on computer languages. I thought that he __48__ could not afford such a textbook. I also remembered that I had won $ 500 in a contest. I __49__ the entire $ 500 to my newly made friend and __50__ him good luck with his exams.

When you are in college, __51__ is very important __52__ to buy new textbooks or to hang out with friends. When I saw this fellow, I was __53__ of my other friends, many of whom were excellent, but were __54__ to pay for their education. This replaced all the hesitation and __55__ in my mind with generosity.

Since then, I have never wasted even a single coin on anything that I don’t need.

36．A．amused               B．interested            C．scared                 D．satisfied

37．A．but                     B．therefore             C．besides                D．now that  

38．A．Dressing             B．Dressed               C．To dress              D．To be dressed

39．A．question              B．study                  C．aim                     D．problem

40．A．of                       B．in                       C．for                      D．to

41．A．suggested            B．allowed               C．asked                  D．required

42．A．catch hold of       B．come up with       C．make up for         D．take possession of

43．A．Fortunately         B．Simply                C．Sometimes          D．Quickly

44．A．where                 B．what                   C．that                     D．which

45．A．used                   B．needed                C．cost                    D．took

46．A．as usual               B．as well                C．as yet                  D．as a whole

47．A．informal             B．ordinary              C．extra                   D．expensive

48．A．surely                 B．finally                 C．probably             D．regularly

49．A．handed in            B．handed over         C．handed down       D．handed out

50．A．wished                B．hoped                 C．wanted                D．told

51．A．friendship           B．luck                    C．money                D．health

52．A．whether              B．how                    C．if                        D while

53．A．charged            B．accused               C．warned             D．reminded                         

54．A．struggling           B．studying              C．willing                D．unwilling  

55．A．excitement          B．doubt                  C．belief                  D．faith

在下列民事纠纷中，哪些属于相邻关系纠纷( )

A．甲在乙的房屋后挖水坑，造成乙的房屋地基下沉，墙体裂缝，引起纠纷

B．甲村为了取水浇菜，必须在乙、丙、丁村的土地上修建铺设管道，引起纠纷

C．甲新建的房屋滴水滴在乙的墙头上，引起纠纷

D．甲村在河流上游修建拦河坝，使乙村用水量骤减，引起纠纷