题目内容：

    Imagine having an ear made out of an apple. It seems like a crazy idea. But it could happen in the near future.

Canadian biophysicist Andrew Pelling used an apple to grow a human ear. He thinks fruit and vegetables can be used to cheaply repair human body parts in the future.

Scientists have been trying to grow organs in labs to replace our old ones. But it‘s a hard job. In the past, scientists have used man-made materials, animal parts and even dead people as scaffolds（支架）. But that has proved to be difficult and expensive.

Pelling and his team, however, found the apple to be a cheap and easy-to-use scaffolds.They first cut an apple into the shape of an ear. Then they used a special way to take out the apple‘s cells（细胞）and make it a scaffold. The team then added human cells to the apple, and watched it grow. “You can implant（移植）these scaffold into the body, and the body will send in cells and a blood supply and actually keep these things alive, ” Pelling said during a Ted Talk speech.

The team put the apple scaffold inside a living mouse and the mouse’s cells slowly take over the pieces of the apple.

Now Pelling is thinking of the other fruit, plants or vegetables to use.

1.Andrew Pelling is a scientist who studies

A.body and organs B.biology and organ

C.physic and body D.biology and physics

2.What did Pelling and his team use as scaffolds?

A.Fruits. B.Animals. C.dead people D.man-made

3.According to Paragraph 4, the right order is________.

①Make the apple a scaffold.

②Cut an apple into the shape of an ear.

③Implant this scaffold into the human body.

④Add human cells to the apple scaffold.

A.①④②③ B.②①④③ C.②①③④ D.④①③②

4.How will the body keep the implanted scaffolds alive?

A.By repairing the scaffolds. B.By replacing the scaffolds.

C.By taking over the scaffolds. D.By sending in cells and a blood supply

5.What‘s the best title of the passage?

A.Scaffolds and cells B.Organs and cells

C.Organs Made of Apples D.Scientists and apples