How fit are your teeth? Are you lazy about brushing them? Never fear: An inventor is on the case. An electric toothbrush senses how long and how well you brash, and it lets you track your performance on your phone. The Kolibree toothbrush was exhibited at the International Consumer Electronics Show in Las Vegas this week. It senses how it is moved and can send the information to an Android phone or iPhone via a Bluetooth wireless connection. The toothbrush will be able to teach you to brush right (don't forget the insides of the teeth!) and make sure you're brushing long enough. "It's kind of like having a dentist actually watch your brushing on a day-to-day basis., " says Thomas Serval, the French inventor. The toothbrush will also be able to talk to other applications on your phone, so developers could, for instance, create a game controlled by your toothbrush. You could score points for beating monsters among your teeth. "We try to make it smart but also fun, " Several says. Serval says he was inspired by his experience as a father. He would come home from work and ask his kids if they had brushed their teeth. They said "yes" , but Serval would find their toothbrush heads dry. He decided he needed a brush mat really told him how well his children brushed. The company says the Kolibree will go on sale this summer, for $99 to $ 199, developing on features. The U. S. is the first target market. Serval says that one day, it'll be possible to replace the brush on the handle with a brushing unit that also has a camera. The camera can even examine holes in your teeth while you brush.

单选题 Which is one of the features of the Kolibree toothbrush?

A、 It can sense how users brush their teeth.
B、 It can track users' school performance.
C、 It can detect users' fear of seeing a dentist.
D、 It can help users find their phones.

【正确答案】 A

【答案解析】解析：细节题。由文章第一段中“An electric toothbrush senses how long and how well you brush．”可知，此电子牙刷会感知使用者是如何刷牙的。

单选题 What can we learn from Serval's words in Paragraph 3?

A、 You will find it enjoyable to see a dentist.
B、 You should see your dentist on a day-to-day basis.
C、 You can brush with the Kolibree as if guided by a dentist.
D、 You'd like a dentist to watch you brush your teeth every day.

【正确答案】 C

【答案解析】解析：推理判断题。由文章第三段中“The toothbrush will teach you to brush right and make sure you are brushing long enough．”可知，发明者所说的“就像有个牙医在监视你刷牙一样”是指Kolibree可以像牙医一样指导你刷牙。

单选题 Which of the following might make the Kolibree toothbrush fun?

A、 It can be used to update mobile phones.
B、 It can be used to play mobile phone games.
C、 It can send messages to other users.
D、 It can talk to its developers.

【正确答案】 B

【答案解析】解析：细节题。由文章第四段中“the toothbrush will also be able to talk to other applications on your phone，80 developers could，for instance，create a game controlled by your toothbrush．”可知，该牙刷是可以用来玩手机游戏的。

单选题 What can we infer about Serval's children?

A、 They were unwilling to brush their teeth.
B、 They often failed to clean their toothbrushes.
C、 They preferred to use a toothbrush with a dry head.
D、 They liked brushing their teeth after Serval came home.

【正确答案】 A

【答案解析】解析：推理判断题。由文章第五段中Serval的孩子们并没刷牙却对爸爸撒谎一事可知，他们不愿意刷牙。

单选题 What can we learn about the future development of the Kolibree?

A、 The brush handle will be removed.
B、 A mobile phone will be built into it.
C、 It will be used to fill holes in teeth.
D、 It will be able to check users' teeth.

【正确答案】 D

【答案解析】解析：推理判断题。由文章最后一段中最后一句“the camera can even examine holes in your teeth while you brush．”可知，未来牙刷会协助人们“check”(检查)牙齿。