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【題目】________a watch for your bother as a birthday gift？

A．Why not to buy

B．Why don’t buy

C．Why no buy

D．Why not buy

【答案】D

【解析】本題考查句式Why not do sth？=Why don’t you do sth？“為什么不做某事？”

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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(監(jiān)測) 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.

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【1】

Thomas Serval

Features

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It’s smart enough to teach you the proper way and 【4】 of brushing teeth.

It also brings you 【5】 because it’s just like playing games. You can score points 【6】 you beat monsters among your teeth.

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invention

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Future development

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