Creative and New Ideas from Teenagers

Teenagers are known for being creative and full of new ideas. Let's have a look at these teenage inventions that might change the world.

Banana leaves usually go bad in two or three days. Richard, a teenager from India, used UV to make the leaves stay fresh for a year. Richard thinks that one day the leaves will be used for making plates, cups and other things.

David, an American teenager, built an earthworm (蚯蚓) robot. It is able to go into the smallest places, where humans or dogs can't go. It will be finding people in a fire or an earthquake.

Sara, a 14-year-old girl, from South Africa, found it tiring and boring to hand wash clothes in the nearby river. She reused some bicycle parts and created a washing machine that saves time, energy and keeps people fit at the same time.

Alex, a 15-year-old boy, from England, noticed that his grandfather who got Alzheimer's disease（老年癡呆）would often leave home and get lost. So he invented the wearable sensors（感應(yīng)器）to help people find their family members like his grandfather.

1.Who built an earthworm robot?

A.Richard. B.David. C.Sara. D.Alex.

2.The wearable sensors invented by Alex can ___________.

A.make things stay fresh B.help people wash clothes

C.go into the smallest places D.help people find their family members

3.Which of the following is TRUE?

A.Plates and cups are made of fresh banana leaves.

B.Sara's washing machine can also keep people fit.

C.David is a middle school student from India.

D.Alex's wearable sensors will keep old people at home.

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