The number of books in the bookshop is about 10，000 and a number of them________about science．

A．is

B．was

C．a(chǎn)re

D．were

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A

Soon computers and other machines will be able to remember you by looking at your eyes！The programme works because everyone’s eyes are different．So in the future you won’t have to remember a number when you want to use a machine or take money out of a bank．You’ll just have to look at the machine and it will be able to tell who you are．

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