【Native Speaker每日综合训练—38系列】【38-01】科技 de-extinction

Yvonne52585

speaker
Biologists have find a way that can stop species from extinction forever.
Biologists collected the gene of species which are  related to the extincted species, adn then synthetized the gene to make de-extinction possible.

warm up  0:51
the author's work as a ecologist

time 2  1:28
Is it meaningful to clone the extincted mammoth?
the concern about cloning mammoth

time 3  2:06
the living habits of mammoth

time 4  2:27
Evidences that can improve the habits of mammoth help us know the influence of climate change and human activities.

time 5  1:59
Although ecologists can clone mammoth, they can't say clearly what the specific characters of mammoth are, and even they are not sure that the clone one is the real mammoth.

time 6   2:20
Arguments against clone show the concern that ecologists don't know the further influence of their clone.
It is more important for ecologists to use their current technologies to save the pre-extincted species, rather than to make one de-extincted.

obstacle 8:20
Main idea: is clone really work to save endangered species?
author's attitude: neutral
article struture:
*Many think that clone is not feasible for two reasons:
     1.Even though species are cloned, people still don't know why they extincted and how to protect them from extinction again.
     2.It is risky to do the experiments.
*It is still useful to make clone ones since it is useful for further study.
*example for the advantages that clone have
*the two problems that led some clone actions failed:
    1. In a hybrid embryo, proteins do not always fit together properly, which leaves cells starved for energy.
    2.the cloned one have special feature that is different from the real one.
*solutions to solve the showed problems

lily510

first day
not so good
Speaker
Can't remember much of it

Speed
time1 1'19
Time2 1'45
Time3 2'50
Time4 3'27
Time 5 2'56
Time 6 3'41

Obstacle
Forget the time

TINGYI-2014

0'50  2'24 4'24 7'15   9'4  12'3  24'2
Pay so much attention in the ainimal which have gone but care less for the ones that are in danger.