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27. To her disappointment, what she had devoted herself to _______ in nothing but failure.

A. resulting       B. results       C. has resulted     D. resulted

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26. ______ I enjoy the book with some nice pictures, I don’t have enough money to buy it.

A. Since      B. While       C. As         D. If

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25. I used to go camping a lot, so it won’t be the first time I     in a tent.

A. have slept     B. had slept     C. was sleeping     D. slept

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24. We went to Mountain Tai last weekend, ______, not surprisingly, was crowded with visitors.

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

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23. The company provides cheap Internet access. _______, it makes shareware freely available.

A. In addition    B. In brief      C. In return      D. In common

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22. -Better get down to your work, Jack.

- ________ .

A. It’s my pleasure          B. Not to mention it

C. Mind your own business      D. You are welcome

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第一节 语法和词汇(共15小题,每小题1分,满分15分).

从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。

21. _______ global financial crisis is   __ challenge for the whole world. Confidence, cooperation and responsibility are keys to overcoming the crisis.

A.A;the    B.A;a       C.The, the    D.The;a

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46.(8分)某校生物研究性学习小组的同学在进行遗传病发病情况调查时,发现本校高一年

    级有一位男生患一种单基因遗传病,这种病有明显的家庭聚集现象。该男生的祖父、祖

    母、父亲都患此病,他的两位姑姑也有一位患此病,这位姑姑又生了一个患病的女儿,

    已知家族中其他成员都正常。

   (1)该遗传病的致病基因位于_________染色体上。

   (2)请根据这个男生及其相关的家庭成员的情况,在下图方框中绘制出遗传系谱图,并标出该男生直系亲属的基因型。(该致病基因用A或a表示)

图例:○正常女性
●女性患者
□正常男性
■男性患者
○--□夫妻

 

 

 

(3)该男生的基因型与他姑姑患病女儿的基因型相同的几率是__   __%。预测将来该男生与表现型正常,但其父亲为色盲的女性婚配,生一个只患一种病的男孩几率是___   _。

(4)经多方咨询,该男生进行了手术治疗,术后表现正常。若成年后与表现型正常的女性婚配,你认为其后代是否会患该病?为什么?________,______________________________。

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