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外研2003课标版《Reading and vocabulary》优质课PPT课件下载
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Brainstorm
organim
stem cell
genetics
gene
enzyme
embyros
...
tissue
clone
1.a transparent twisting ladder made of the fundamental component of life
( )
2. an organism which is genetically identical to another ( )
3. chemicals formed in the body ( )
4. takes the DNA from a single cell to create a whole new individual
( )