27. To her disappointment, what she had devoted herself to _______ in nothing but failure.
A. resulting B. results C. has resulted D. resulted
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
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
24. We went to Mountain Tai last weekend, ______, not surprisingly, was crowded with visitors.
A. where B. which C. that D. when
23. The company provides cheap Internet access. _______, it makes shareware freely available.
A. In addition B. In brief C. In return D. In common
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
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
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 |
Ⅰ Ⅱ Ⅲ |
(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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