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选修8《Using LanguageⅡ》公开课PPT课件优质课下载
the first cloned calf in 2002 in China
With the __________ (develop) of technology, Cloning is _____ (use) in many fields. However, people have ________(difference) opinions about it. Some think it is good while others think it is bad. Cloning can bring many _______ (beneficial) to the human. For example, ____ we use the cloning technology, we can cure some illnesses, so we can save lots of people. ____ cloning still has some problems. Scientists found that the gene of a cloned animal is a little different ______ that of the original animal. So the life will be _____ (short) than the real life. The fact that Dolly the sheep died very young has proved this. It only has the half life of the common sheep.
I disagree to the idea of cloning humans. I think the cloning technology should be used ___________(careful). If we clone humans, there will be many problems. The population is the ____ (big) problem. Maybe some people will use the cloned people to start a war. So I am against cloning humans.
development
used
different
benefits
if
But
from
shorter
carefully
biggest
Discussion:
Should we clone
humans?
Arguments for cloning humans:
1. cure serious illnesses (rare diseases, incurable diseases) .
2. help scientists do further research into some special fields.
3. help people to have babies.
......
Arguments against cloning humans:
1. give rise to moral problems.
2. create more terrorists… make use of …
3. contribute to / lead to the spread of new