2019学年度人教版选修八Unit CloningPeriod1Warming Up & Reading课件(34张)
2019学年度人教版选修八Unit CloningPeriod1Warming Up & Reading课件(34张)第4页

3. University professors both teach and _________ (从事)research. 4. Cloning plants is ______________ (简单的)while cloning animals is very ___________ (复杂的). 5. __________ (总共)Dolly lived six and a half years, half the length of the life of the original sheep.

undertake

straightforward

complicated

Altogether