Smart phone is one of the greatest _________ of modern times.

单选题

Smart phone is one of the greatest _________ of modern times.

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单选题

One of the best ____of the 20th century is the mobile phone.

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判断题

The smart anti-theft system uses a computer or a mobile phone to tell owners the location of stolen cars.

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单选题

It is not polite to ____ somebody when he or she is talking on the phone.

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问答题

uick charging. It is easy to deal with official document. Price: ￥2700. E. Mi phonesA smartphone which has free small window. Clear picture and it will give you new visual experience. Price: ￥17001. Susan is at a middle school. Her parents want to buy her a cheaper cellphone without games installed.2. Mike is a business man and he often travels place to place, so he needs a phone that can deal with his business. What’s more the phone must be easy to be charged. 3. Zhang Qian is a housewife. She

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