Within the next 80 years, our lives may be changed a lot by 3D printing. It has already ___1___ many things in our lives, right down to the food we eat. For example, some ___2___ in London have served 3D-printed hamburgers to customers.
But perhaps the biggest success that people have achieved is in medicine. It is ___3___ when people see a beating heart printed with 3D printing technology. The printed body part might help people live a normal life again ___4___ an illness or an accident. And it is not just humans who are ___5___—in Brazil, people have built new 3D-printed body parts for animals injured in a forest fire!