听第6段材料,回答第6至7题。

1.    (6) When will the woman show the man the apartment?

A.        Next Thursday.

B. Right now.

C. This afternoon.

2.    (7) What is the apartment like?

A.  It’s lovely and very big.   

B.  It’s a good house with a big kitchen .

C.  It’s a quiet place with a sunny window.

听第7段材料,回答第8至9题。

3.    (8) How many rolls of film did the man develop last year?

A.        About 6.

B. About 5.

C. About 3.

4.    (9) What does the man like to take pictures of?

A.  Anything that attracts his attention.          

B.  Anything that shows true feelings.               

C.  Anything that makes people happy.

听第8段材料,回答第10至12题。

5. (10) What is the probable relationship between the two speakers?

A.  Interviewer and interviewee

B.  Father and daughter.

C.  Friends.

6.(11) What has the woman done recently?

A. Built a new building for her father.       

B. Helped her father design some buildings.

C. Learned some design skills from her father.

7(12) Why does the woman want to work in the man’s company?

A.        She wants to be trusted.        

B. She want to design buildings.           

C. She wants to work with her friend.

听第9段材料,回答第13至16题。

8(13) What will the man do for summer break?

A.    Go traveling.

B.    Go back home.                

C.    Go to visit his friends.

9(14)Where is the woman going for her trip?

A. Her hometown.    B.Mary’s home.         C. Suburban areas.

10.(15) How will the woman travel?

A.By bike.           B. By air.               C. By bus.

11.(16) How long will the speakers’ summer break last?

A. Seven days.

B. A couple of weeks.

C. Two months.

听第10段材料,回答第17至20题。

12.(17) Why wasn’t the speaker afraid of the cries of strange animals?

A. He had never been to the forest before.    

B. He thought they were interesting.         

C. He thought they were natural .

13.(18) What attracted the speaker’s father’s interest most?

A. The strange animals.             

B. The special plants.               

C. The singing birds.

14.(19) What did the tiger intend to do?

A.Drink some water.  B.Struggle with the crocodile.  C.Hunt for food.         

15(20) What filled the speaker and his father with terror?

A. The crocodile’s sudden appearance.

B.The tiger’s falling into the water.

C.The tiger’s howl of pain and anger.

53、3. (18分)“试管婴儿”技术是通过将不孕夫妇的精子和卵细胞取出在试管中完成受精,并在试管中培养使其发育到如图所示的时期,再将胚胎移人女性子宫内发育成胎儿。它不仅使一部分不能生育的男女重新获得了生育的机会,也为人类的优生开辟了新的途径。据此回答:

 

(1)试管婴儿“技术在生物学上所依据的原理是(A)

  A.有性生殖      B.组织培养

  C.克隆技术      D.基因工程

(2)人的受精卵通过卵裂,逐渐形成大量形态、功能不同的细胞、组织,并进而形成器官和系统。从细胞水平看,卵裂的分裂方式是____________________________。

(3)该图示时期是胚胎发育的_________________期。

(4)在该图下一时期,b细胞最可能成为___________胚层的一部分。

(5)“试管婴儿”的形成用到下列哪些技术?(填序号)

____________________________________________________。

  ①体外培养   ②人工授精   ③胚胎移植   ④核移植

(6)要得到“同卵双胞胎”,采用的技术是_________________________________________。双胞胎的性别是否相同?__________________。

(7)“试管婴儿”技术诞生后,继而出现了“设计试管婴儿技术”,二者在对人类作用上的区别是____________________________________________________________。

(8)现在大多数人反对设计婴儿性别,其原因是________________________。

 

                                        

52、(15分)下图为胚胎移植的基本程序、早期胚胎发育过程(图甲),及经过体外受精和胚胎分割移植培育优质奶牛的过程(图乙).请回答下列问题:

(图甲)

(图乙)

(1)超数排卵技术的处理措施是对供体母牛注射      。冲卵实质上是用特定装置,将供体母牛子宫内的            冲洗出来。

(2)图乙中②指的是       。进行胚胎分割时,应选择发育到        时期的胚进行操作

(3)图甲中标号3为        ,它将来可发育为           。

(4)若一次给受体母牛移入多个胚胎,产生的多个后代基因型相同吗?      ,为什么?            

通过胚胎分割产生的两个或多个个体共有的根本特点是               

(5)图乙中A细胞是         ,在进行体外受精前要对精子进行    处理。

哺乳动物受精过程有哪些机制阻止多精子入卵受精?(    )

A.顶体反应      B.精子穿越卵子透明带触及卵黄膜,导致透明带反应

C.精子触发卵黄膜表面微绒毛的抱合反应   D.精子入卵后,触发卵黄膜封闭作用

(6)在对囊胚阶段的胚胎进行分割时,应注意                 

(7)受体母牛必须和供体牛属于          。移植后的胚胎能在受体子宫中存活的生理基础是                

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