Question

18．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 brush，and it lets you track（跟踪） 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 example，create a game controlled by your toothbrush．You could score points for beating monsters among your teeth．"We try to make it smart and fun，"Serval 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 that really told him how well his children brushed．
The company says the Kolibree will go on sale this summer，from 99to199，and the U．S．is the first target market．
29．All of the following statements are wrong exceptB．
A．It can track users'school performance．
B．It can sense how users brush their teeth．
C．It can check users'fear of seeing a dentist．
D．It can help users find their phones．
30．What can we learn from Serval's words in Paragraph 3？D
A．You will find it enjoyable to see a dentist．
B．You should see your dentist on a day-to-day basis．
C．You'd like a dentist to watch you brush your teeth every day．
D．You can brush with the Kolibree as if guided by a dentist．
31．What can we infer about Serval's children？A
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．

Answer 1

分析 这是一篇关于科技发明的文章．本文介绍了一种新型的电动牙刷既智能又有趣，能够检查人们的刷牙情况．

解答 BDA
29．B 考查细节理解．由第一段第四句"An electric toothbrush senses how long…"可知，这种电动牙刷可以感知你刷牙的时间和刷牙的情况，这些你都可以通过手机来知道自己的表现．故答案选B．
30．D 考查细节理解．Serval这句话的意思是用这种电动牙刷就好像有牙医天天在监督你的刷牙情况一样，故答案选D．
31．A 考查判断推理．根据第五段第二句"He would come back…They said‘yes，'but …"可以推断，Serval的孩子没有刷牙却说自己刷牙了，这说明孩子们不喜欢刷牙．故答案选A．

点评 本文是一篇日常生活类阅读，题目涉及多道细节理解题，推理判断题．做题时学生应仔细阅读原文，把握文章主要内容，联系文章上下文内容并结合所给选项含义，从中选出正确答案，一定要做到有理有据，切忌胡乱猜测．