Ludwick Marishane，a young man from South Africa，was with his friends in Limpopo when they started talking about inventing （發(fā)明） something to put on your skin so you don't have to take a bath.He used his mobile phone to do a lot of research（研究） online.
    Millions of people around the world haven't got clean water.This is a huge problem because dirty water causes terrible illnesses.One of them is trachoma （沙眼）.Thousands of people all over the world get it every year.They wash their faces with dirty water，get an infection（傳染病） and sometimes become blind.
    Ludwick started thinking.He wanted to make something to help people in parts of the world where it's difficult to find clean water.He did more research on his mobile.Ludwick had a plan.He wanted to make a gel（凝膠） for people to put on their skin so they don't have to take a bath.He wrote the formula （配方） for the gel on his mobile phone.When he was at university，he never stopped thinking about his invention.Three years later the dream came true.He made the gel and called it "DryBath".It looks like any other gel，but it isn't!It saves lives and it also helps save water!
    Ludwick Marishane is the winner of lots of prizes.People call him "one of the brightest young men in the world".He is very happy about the success.That's important in many parts of the world where it's difficult to find clean water.Now he wants to invent other things，and he wants to help other young people become inventors，too.

回答下面5個(gè)問題，每題答案不超過6個(gè)詞。
（1）Where does Ludwick Marishane come from？

He is from South Africa.

He is from South Africa.

（2）What does dirty water cause？

Terrible illnesses.

Terrible illnesses.

（3）How do people use the gel "Drybath"？

They put it on their skin.

They put it on their skin.

（4）What does DryBath help do？

It saves lives and it also helps save water.

It saves lives and it also helps save water.

（5）What do you think of Ludwick Marishane？

He is smart and helpful.

He is smart and helpful.