新视野大学英语视听说教程 4 Unit 8-1

 

Uint8
II. Basic Listening Practice
1. Script                                                                             
M: Scentists claim the world population has 99.5% of the same DNA¹.
W: But this doesn’t tell us there is no such thing as race.
Q: What is true of the DNA of difference races?
2. Script
W: With the advent² of the genetic³ map we know where everything is, but do we know where to go with it?
M: Your map seems to differ largely from my geographical⁴ map!
Q: What does the man imply?
3. Script
M: As you know, it has taken millions of years of evolution and natural selection to get us where we are today.
W: Yes, but now that we have genetic engineering, we seem to have decided⁵ that we want to be God.
Q: What does the woman imply?
4. Script
M: I think the research into cloning will lead us into dangers, filling us with false hopes of perfection.
W: It’s too late to turn back the clock. We’ll just have to depend on common sense to solve uncommon⁶ problems.
Q: What does the woman mean?
5. Script
W: In America, many prisoners are having their cases reviewed, and some have even been freed through DNA testing.
M: Except for the ones whose death sentence has already been carried out.
Q: What can we learn about DNA testing from the dialog?
Keys: 1.B  2.C  3.D  4.A  5.C

1 DNA   

(缩)deoxyribonucleic acid 脱氧核糖核酸

参考例句：

• DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
• Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。

2 advent   

n.(重要事件等的)到来，来临

参考例句：

• Swallows come by groups at the advent of spring. 春天来临时燕子成群飞来。
• The advent of the Euro will redefine Europe.欧元的出现将重新定义欧洲。

3 genetic   

adj.遗传的，遗传学的

参考例句：

• It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
• Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。

4 geographical   

adj.地理的；地区(性)的

参考例句：

• The current survey will have a wider geographical spread.当前的调查将在更广泛的地域范围內进行。
• These birds have a wide geographical distribution.这些鸟的地理分布很广。

5 decided   

adj.决定了的，坚决的；明显的，明确的

参考例句：

• This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
• There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。

6 uncommon   

adj.罕见的，非凡的，不平常的

参考例句：

• Such attitudes were not at all uncommon thirty years ago.这些看法在30年前很常见。
• Phil has uncommon intelligence.菲尔智力超群。