题目内容

【题目】Japanese companies have already made robots ____.

A. to walk and dance B. to walk and to dance

C. walk and dance D.walking and dancing

【答案】C

【解析】

试题分析:句意:日本公司已经制作能走和能跳的机器人了。这里是make sb/sth do sth使某物或某人做某事所以空格处应该用动词原形。结合句意,故选C。

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【题目】We brush our teeth every day but few people know how well we’re brushing. 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 an app and connect via Bluetooth, and the Kolibree will record 1) the time you spent brushing teeth, 2) whether 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 via Bluetooth, telling you whether you have brushed in a proper way. The Kolibree app records your progress and scores your brushing way to help you improve brushing habits.

The toothbrush will also be able to talk to other apps on your phone, so developers could create a game controlled by your toothbrush. That would be very interesting.

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.

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