新视野大学英语视听说教程第四册 Unit 8 Basic Listening Practice
M: Scentists claim the world population has 99.5% of the same DNA.
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 advent of the genetic map we know where everything is, but do we know where to go with it?
M: Your map seems to differ largely from my geographical 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 decided 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 solveuncommon 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
