The behavior sensor and software system built in a phone

A．could help store message

B．could send messages instantly

C．could tell when it is wise to interrupt yo

D．could identify important phone call

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1 Scientists at Carnegie Menon University tried to find out

A．why office doors were often 1eft ope

B．when it was a good time to turn off the compute

C．what questions office workers were bothered wit

D．which behaviors could tell whether a person was busy

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2 During the experiment，the subjects were asked

A．to control the sensors and the camer

B．to rate the degrees to which they could be interrupte

C．to compare their behaviors with others’．

D．to analyze all the indicators of interruptio

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3 The computer performed better than people in the study because

A．the computer worked harder

B．the computer was not busy

C．people tended to be biased

D．people were not good at statistics

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