第二节听取信息(共5小题,每小题1分.满分5分) 听下面一段对话.请根据题目要求.从所听到的内容中获取必要的信息.填入答题卡标号为16 ~ 20的空格中.听录音前.你将有10秒钟的阅题时间.录音——青夏教育精英家教网—

第二节　听取信息(共5小题；每小题1分，满分5分)

听下面一段对话，请根据题目要求，从所听到的内容中获取必要的信息，填入答题卡　标号为16 ~ 20的空格中。听录音前，你将有10秒钟的阅题时间。录音读两遍，你将有60秒钟的作答时间。

Wenchuan Earthquake
Transportation	The traffic was cut off.
Some damage	Buildings 　　　16　　 .
Things needed	Food, fresh water and 　　　17　　 .
Things donated	Money, food, 　　　18　　　 .
Number of deaths	19　　　　by 12:00, Tuesday, May 27.
Ways for donating money	By way of Bank of China, or Chinese Red Cross Foundation, or at the 　　　20　　　offices.

第一节　听力理解(5段共15小题；每小题2分, 满分30分)

每段播放两遍。各段后有几个小题, 各段播放前每小题有5秒钟的阅题时间。请根据各段播放内容及其相关小题, 在5秒钟内从题中所给的A、B、C项中, 选出最佳选项, 并在答题卡上将该项涂黑。

听第一段对话，回答第1 ~ 3题。

1. Which of the following does the man compare before making his decision?

A．Weight and cost. 　　　　　　　　　 B．Price and time. 　　　　　　　 C．Forms and value.

2. How much does the man eventually pay?

A．￥7.30. 　　　　　　　　　　　　　　　 B．￥11.70. 　　　　　　　　　　　 C．￥19.70.

3. What does the woman advise the man to do?

A．Put down a return address.　　 B．Buy some extra stamps.

C．Evaluate the object first.

听第二段对话，回答第4 ~ 6题。

4．What is the relation between the two speakers?

A．Close friends. 　　　　　　　　　 B．Teacher and student. 　　 C．Mother and son.

5．What did the boy often do at school?

　　　 A．He often stayed after class.　 B．He often fell asleep in class.

　　　 C．He often made much noise in class.

6．Which of the following statement is true?

　　　 A．The boy is encouraged because he won’t fail any exam.

　　　 B．The boy shows interest neither in his lesson nor in work.

　　　 C．The boy prefers to go to work rather than go to school.

听第三段独白，回答第7 ~ 9题。

7．How many ways are mentioned for the cities to get water?

A．Two. 　　　　　　　　　　　　　　　　 B．Three. 　　　　　　　　　　　　 C．Four.

8．Where is a dam usually built according to the speaker?

A．At the upper part of the river. 　　　 B．At the middle part of the river.

C．At the lower part of the river.

9．How is water made drinkable?

A．By testing it in the building.　　 B．By piping it to the city.

C．By mixing added things with it.

听第四段对话，回答第10 ~ 12题。

10．Who would Sara prefer to live with?

A．A single person. 　　　　　　　　　 B．A family. 　　　　　　　　　　 C．A couple.

11．Which of the following doesn’t Sara have to pay for?

A．Gas, electricity and phone bill.

B．Electricity, phone bill and water.

C．Water, electricity and gas.

12．What will Sara have to do before she moves in?

A．Deposit a certain sum of money.

B．Pay her rent for the first few months.

C．Buy some insurance just in case.

听第五段对话，回答第13 ~ 15题。

13．Where does the conversation most probably take place?

A．Outside a supermarket.　　　　　 B．Near to a clothing store.　 C．In a leatherwork store.

14．What’s Mike’s main problem in buying a gift for his roommate?

A．The gift he wants for his roommate’s birthday isn’t available.

B．He doesn’t know what color of a gift his roommate likes.

C．He doesn’t know what gift to buy for his friend’s birthday.

15．What is Lily’s opinion of a gift?

A．A gift should be something to show off to others.

B．A gift should have some specific functions.

C．A gift should be both decorative and reasonable.

34、(11分)镰刀型细胞贫血症是一种在地中海地区发病率较高的单基因遗传病，已知红细胞正常个体的基因型为BB或Bb，镰刀型细胞贫血症患者的基因型为bb，该病现在可以通过核酸杂交技术进行基因诊断。左图为某一家族中该病的遗传系谱图，因为6和7曾生下一个患病男孩，为了能生下健康的孩子，每次妊娠后都要进行产前诊断，右图是夫妇二人及胎儿基因诊断的结果。

(1)镰刀型细胞贫血症的致病基因位于　　　染色体上，属于　　　　　性遗传病。

该家族中肯定是该致病基因携带者的成员是___________________。

(2)7 的基因型是_______________。

(3)从右图可知，某个位点的突变使得原来正常基因的限制酶切割位点丢失：正常基因该区域上有3个酶切位点，突变基因上只有2个酶切位点。该区域经限制酶切割后得到的酶切片段可与探针杂交，经凝胶电泳分离后显示出不同的带谱，正常基因显示________条带谱，突变基因显示________条带谱。

(4)根据凝胶电泳带谱分折可以确定胎儿的基因型，判断其是否会患有镰刀型细胞贫血症。这对夫妇4次妊娠中的胎儿中，Ⅱ2的基因型是__________，正常胎儿有_________(写数字)(2分)。

(5)调查发现该地区人群中镰刀型细胞贫血症的发病率为1/3600。Ⅱ₈与一个表现型正常的女子结婚，其孩子患该病的概率为　　　　　 (用分数表示，2分)

33、(11分)请分析下表，回答有关实验的问题。

组别	材　　　　料	实验条件	观察内容
A	A₁	人的口腔上皮细胞	健那绿染液	线粒体
A₂	0.9%NaCl溶液、8%盐酸、吡罗红甲基绿染色剂	DNA和RNA在细胞中的分布
B	豆浆	0.1g/mL的NaOH溶液、0.01g/mL的CuSO₄溶液	液体的颜色变化
C	梨汁或苹果汁	0.1g/mL的NaOH溶液、0.05g/mL的CuSO₄溶液	液体的颜色变化
D	洋葱鳞叶表皮	解离液、清水、0.02g/mL的龙胆紫等	有丝分裂的过程
E	洋葱根	冰箱、卡诺氏液、95%酒精、解离液等	染色体数目的变化
F	菠菜叶	二氧化硅、碳酸钙、无水乙醇、层析液等	叶绿体中色素的种类和颜色