题目内容：

Amazing Scientists

Who Happen to Be Teenagers

We’ve got a list of teen scientists from a variety of fields.

Jack Andraka

Jack Andraka created a biosensor for cancer that he says is 168 times faster, 26,667 times less expensive and 400 times more sensitive than technology nowadays.

He’s the youngest person to have spoken in front of the Royal Society of Medicine.

Taylor Wilson

Taylor Wilson was the youngest person to achieve nuclear fusion(核聚变). He was inspired by The Radioactive Boy Scout, a novel in which a kid tries and fails to build a nuclear reactor.

Taylor thought he could do better.Long story short, he wanted to build a small nuclear reactor. And he did it at the age of fourteen. He received a Thiel Fellowship, which gave him $100,000 to work on his own research.

Sara Volz

Sara Volz performed experiments in which she grew algae(藻类)based on their oil output for the purpose of growing them as biofuel. This research is especially important as the world continues to search for a way to lessen our dependence on non-renewable energy. She won the top prize of $100,000 in the lntel Science Talent Search.

Daniel Burd

Plastic usually takes thousands of years to decompose(降解)，but this high school student Daniel Burd managed to do it in three months.

In an experiment，he mixed plastic bags and a special kind of dirt together, and found that they did decompose faster.He then performed tests to find the bacteria(细菌)responsible for decomposing the plastics.

His solution only produces water and small amounts of carbon dioxide.He says it could easily be used elsewhere.

1.Who designed a medical instrument?

A.Sara Volz. B.Daniel Burd. C.Jack Andraka. D.Taylor Wilson.

2.What excited Taylor Wilson’s interest in his invention?

A.A novel by a kid. B.Plastic pollution.

C.Energy shortage. D.A story book.

3.What do we know about Daniel Burd’s invention?

A.It won him a $100,000 prize. B.It does little harm to the environment.

C.It was completed in three months. D.It is widely used in everyday waste.