Teenagers should to take care of themselves from a young age .A. educate B. be educatingC. have educated D. be educated 题目和参考答案——青夏教育精英家教网—

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Teenagers should ________ to take care of themselves from a young age .

A. educate B. be educating

C. have educated D. be educated

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In the future your computer will be looking you in the eye. So smile!

1.The program has been tested in shops and banks in .

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B. In Britain, 91% of people said that they liked the idea of eye recognition.

C. Everyone’s eyes are different, even twins have different eyes.

D. Some other programs used to be 51% correct.

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