Week4 1-4句原文

1.  Some of the highest tech at this year's Consumer Electronics Show is all about keeping you safe in your car. 

2.  The iris system, for instance, monitors everyone in your car.

3.  It can alert drivers if they seem drowsy, or can keep track of babies in the back seat, and warn drivers when things look dicey. 

4.  Cameras are everywhere today, and their number increases regularly every single day.