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译林2003课标版《Self-assessment》集体备课PPT课件优质课下载
or a plant from its own cells.
Scientific terms
clone
Dolly
Step 2 Consolidation
Scientists have successfully cloned the first human embryo, which has caused much debate. Some point out that cloning can be used to save human lives, 1.________ some disagree and are afraid that some day in the future cloning will cause many problems to 2. _________(we) humans.
Cloning is producing 3.________exact copy of a plant or an animal using its cells. The first mammal to be cloned 4.______________ (successful) from an adult cell was Dolly the sheep. The scientists who created Dolly5. ____________(praise) for their wonderful scientific advance and some are now considering 6._________(clone) human beings
while
us
an
successfully
were praised
cloning
However, some people think that cloning human embryos with the intention of destroying them 7._________(show) no respect to human life. But it is good news for those 8. _________are unable to have their own 9. ________ (child). In China, scientists have focused more efforts on cloning animals. They have succeeded 10.________ producing clones of cows and goats and continue to research ways in which cloning can benefit mankind.
shows
who
children
in
Step 3 Project
Natural disaters bring great damage to human beings
Human beings carelessness cause great damage to nature
How can we deal with the relationship between human beings and nature?
Step 4 Translation
1. For a long time, our environment has been damaged because of the carelessness of humans. However, from the point of view of some people, we are only doing what humans have always done, using nature to meet out own needs. Other people argue that such thinking may cause a disaster unless we understand 2. 一个干净的环境如何使我们所有人受益。
After decades of destroying nature and using up natural resources, 3. many developed countries are now concerned about saving nature rather than destroying it. However, many developing countries are till using up natural resources at a fast space.