0  299801  299809  299815  299819  299825  299827  299831  299837  299839  299845  299851  299855  299857  299861  299867  299869  299875  299879  299881  299885  299887  299891  299893  299895  299896  299897  299899  299900  299901  299903  299905  299909  299911  299915  299917  299921  299927  299929  299935  299939  299941  299945  299951  299957  299959  299965  299969  299971  299977  299981  299987  299995  447090 

29. China’s police authority Friday launched a two-month campaign against drink driving ,aimed_____   serious traffic accidents.

  A. to preventing   B. at preventing   C. preventing    D. prevented

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28.More and more young girls are ______ to South Korean soap operas because of the beautiful scenes in them.

A adapted     B addicted    C admitted   D affected

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27.Luckily,traditional Chinese medicine (TCM) is making a difference  _______ the H1N1 flu.

A from    B of   C with    D against

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26.Each day is new.______ this changing world, we need to learn how to change our ways.

A To survive    B Survived   C Having survived   D To be survived

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25.I had a fear of _____,and the higher I got, the ____ I felt.

A high; worse     B height; better    C heights ;worse   D high ;better

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第一节:单项选择(共15小题,每小题1分,满分15分)

21.Life _____ like a box of chocolate;you never know what you ____ get.

A was ;will   B is; are going to   C will be; are to   D has been ; are about to

a became ______first developing country to host _____ World Expo when ShangHai won the bid in December 2002 with a “ better city, better life” theme.

A the; the    B a; the       C the; /       D a;/

23_____from the appearance, it is very peaceful; but in fact , a great event will break out soon.

A Judging    B Judged      C Judge      D To judge

a______ grand celebrations every 10 years to celebrate the founding of the country,but this year’s parade (阅兵式)______those in the past.

A  held; topped   B has held; to top   C holds; topped   D holds; tops

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45.(15分)果蝇是遗传学研究的好材料,人们对果蝇的遗传及变异作了较充分的研究。

I.人们研究发现,Y染色体含有几十个基因。如果果蝇的刚毛、截毛这对相对性状由X、Y染色体上的一对等位基因控制,刚毛基因B对截毛基因b为显性。让刚毛果蝇与截毛果蝇杂交,后代中,雌果蝇全为刚毛,雄果蝇全为截毛,则亲本的杂交组合为(基因型):      。用遗传学图解表示这一杂交过程。

遗传学图解:

II.某生物兴趣小组饲养了一批纯合的长翅红眼果蝇幼虫,分装在10支试管中,准备放在25℃培养箱中培养(果蝇生长的最适温度),由于疏忽,其中有2支试管未放入培养箱,当时气温高达37℃,十天后观察发现,培养箱中的果蝇全为长翘,而未放人培养箱中的果蝇出现残翅。

(1)果蝇细胞中基因的载体有            你认为基因、环境因素、性状三者关系是怎样的?                   

(2)残翅性状的出现在遗传学上称为         。你认为出现残翅的可能的原因有①                                       

                                        

(3)请设计实验证明你的推测。(简要写出实验步骤,预期结果并得出结论。提示:选择果蝇杂交的方法进行实验)

实验步骤:a.                        

      b.                         

c.                        

预期结果与结论:

①:                                

②:                                

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44.(8分)多指为一种常染色体显性遗传病,受P基因控制;红绿色盲是一种x染色体的隐性基因控制的遗传病,受b基因控制,分析下列遗传系谱,回答问题:

(1)某中学生物兴趣小组开展研究性学习,对该校各年级在校学生中红绿色盲发病情况进行调查。假设调查人数共3000人,(男性1500人,女性1500人),调查结果发现有色盲患者45个,其中男性40人,女性5人 。说明红绿色盲的遗传有       的特点。

(2)Ⅲ一1个体的一个精原细胞产生的精子类型分别是      

(3)Ⅲ一2的基因型是   ,她是纯合体的概率为     。

(4)如果Ⅳ一l是一个男孩,此男孩既是多指又是色盲的概率为   不患色盲的概率为   ;两病都不患的概率为    。

(5)Ⅳ一2是一个只患色盲而不患多指女孩的概率为         。

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