单项选择题

The technology of fingerprints ______.

A．will be used widely in people's work and life
B．always works
C．are used to help scientists to compete in their computer researches
D．helped the FBI to keep track of the terrorist of the March 2004 bombing at a train station in Madrid

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热门试题

单项选择题

______ helped them to live a better life than most people of that time.

A．The knowledge of time
B．The knowledge of tools
C．The knowledge of about nature and the world
D．The knowledge of numbers

单项选择题

According to the passage, ______.

A．a good night's sleep helps your brain permanently file away lessons learned during the day.
B．the brain has to wait until the lights are out to begin processing those memories
C．perhaps it's safe for anyone to get plenty of sleep when it has not been proved unnecessary for memory
D．attracting the subjects doesn't affect their ability to store memories.