题目内容：

    We brush our teeth every day but few people know ________. Today, a French company has introduced an electric toothbrush, which can work wirelessly (无线地) with a smartphone. It’s called the Kolibree toothbrush. It has different models, and will cost from $99 to $200.

Users download (下载) an app and connect by Bluetooth, and the Kolibree will record 1) the time you spend brushing teeth, 2) whether (是否) all areas of your mouth are reached 3)whether you brush up and down instead of just side to side. Then it will send the information to a mobile phone by Bluetooth, telling you whether you have brushed in a night way. The Kolibree app records your progress (进步) and scores your brushing way to help you improve brushing habits.

The Kolibree toothbrush was invented by Thomas Serval. He says the idea of inventing it came from his experience as a father. He would come home from work and ask his kids if they had brushed their teeth. They always answered “yes”, but Thomas used to find their toothbrush heads dry. He decided that a kind of brush was needed to tell him how well they brushed their teeth.

Thomas says that one day it’ll be possible to use a brushing unit with a camera. The camera can even examine holes in your teeth while you brush.

1.Which of the following is the best for ________?

A.what kind of toothbrush is good for us

B.whether there are bad teeth in our mouths

C.how interesting brushing teeth can be

D.how well we’re brushing our teeth

2.According to the article, the current (目前的) Kolibree toothbrush can ________.

A.check the holes in your teeth when you brush

B.tell you whether you have made improvement in teeth brushing

C.send all kinds of useful information to your mobile phone

D.help you reach the unknown areas of your mouth

3.What can be inferred (推断) from the story of Thomas Serval?

A.Thomas’s kids didn’t have a good brushing habit.

B.Thomas’s kids never told the truth to him.

C.Thomas was very interested in making inventions.

D.Thomas was a careless father.

4.Who is the Kolibree toothbrush most suitable (合适的) for?

A.An inventor who wants to make a better toothbrush.

B.A woman who wants to have whiter teeth.

C.A girl who wants to know whether she brushes her teeth correctly.

D.A boy who wants to make teeth brushing fun.

5.Which of the following statements about the Kolibree toothbrush is NOT TRUE according to the article?

A.It is an electric toothbrush, which can work with a smartphone.

B.Different models of it have different prices.

C.It was first invented by a French company.

D.You need to download an app to record information with it.