第二节 (共15小题;每题1分,满分15分)

听下面5段对话或独白。每段对话或独白读两遍。

听第6段材料,回答第6、7题。

6.    What are the woman and the man talking about?

A.  Holiday.       puters.       C.Rest.

7.  How long will the man spend his holiday at home?

A.  Three weeks.      B.Two weeks.      C.One week.

听第7段材料,回答第8至10题。

8.  Why has the girl not seen the boy for a long time?

A. He is too busy to meet friends. 

B.He has moved to another place.         

C. He has been ill for several weeks.

9.  What is he busy with?

A. He is busy with his homework. 

B. He is busy with his lessons.

C. H e is busy preparing for a test.

10.When will the test be held?

A. It will be held next month.

B. It will be held next week

C.It will be held next term.

听第8段材料,回答第11至13题。

11.What will the woman do when she gets her BA degree?

A.She will go on for a master degree.

 B.She will go to work first.

C.She will learn Chinese.

12.What is the man not going to do after graduation?

A.Go to the graduate school.   B.Work for a while.   C.Learn Chinese.

13.Which of the following is TRUE?

A.The man has been to China before.

B.The man has never been to China before he gets his BA.

C.The man has decided not to go to China before graduation.

听第9段材料,回答第14至16题。

14.How will Kate travel to the New York city?

A.She will ride with Jack’s brother. 

B.She will drive her own car.

C.She will take a train.

15.Where did Kate and Laura meet?

A.At a concert.     B.On a train.      C.At a camp.

16.What do Kate and Laura have in common?

A.They both live in New York.

B.They both love music.

C.They both enjoy traveling.

听第10段材料,回答第17至20题。

17.Where did the guests come from?

A.They came from America.

B.They came from Britain.

C.They came from Canada.

18.What did the guests decide to do when they were not sure what to do?

A.Follow Li Hongzhang.   B.Follow their leader.  C.Ask the waiter to help them.

19.What did Li Hongzhang accidentally do when they were served with dumplings?

A.He picked it and dropped it into the wine glass.

B.He picked it and put it into mouth.

C.He picked it and dropped it on the table.

20.Why did the foreigners laugh?

A.They didn’t know what had happened.

B.They didn’t have good manners at table.

C.They had made a mistake.

⑴ 在葡萄酒的自然发酵过程中,酵母菌的来源是   ▲   。

⑵ 酵母菌异化作用的类型是    ;利用酵母菌制作果酒的原理可用反应式:   ▲   表示。

⑶ 现在工厂化生产果酒,为提高果酒的品质,更好地抑制其它微生物的生长,采取的措施是   ▲  。 

⑷ 果汁发酵后是否有酒精产生,可用   ▲   来检验。

B.(现代生物科技专题,10分) 

根据模拟制作重组DNA分子的活动,甲DNA分子、乙DNA分子被EcoRI酶切后,即可获得所需的目的基因和质粒,回答以下问题:

(1)绿色硬纸板(甲DNA分子)的碱基序列为:

     ……ATAGCATGCTATCCATGAATTCGGCATAC……

     ……TATCGTACGATAGGTACTTAAGCCGTATG……

     红色硬纸板(乙DNA分子)的碱基序列为:

     ……TCCTAGAATTCTCGGTATGAATTCCATAC……

     ……AGGATCTTAAGAGCCATACTTAAGGTATG……

 其中,   ▲    DNA分子含有“目的基因”,   ▲   DNA分子是“质粒”。

   (2)用剪刀代表进行切割。酶切位点在   ▲   (a处还是b处),

此化学键称为   ▲    。

请用“||”在甲、乙两DNA分子上标出EcoRI的作用位点。

 (3)你模拟插入的DNA片断能称得上一个基因吗?   ▲    。

EcoRI属于   ▲   酶。

 (4)从基因文库中获取目的基因是常用方法,基因文库实际上就是

指导入了某种生物不同基因的许多DNA片断的   ▲    的群体。

按照其中所含基因的量又可分为   ▲   文库和   ▲   文库。

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