题目内容：
共用题干GPS Child Locator Lets Parents Know Their Whereabouts
Children may not like it but a British technology finn has invented an electronic babysitter 一a wristwatch-like
device that lets parents know where their children are at all times.
The GPS Child Locator attaches firmly to a child's wrist and contains a Global Positioning System
(GPS),said Matthew Salmon,a spokesman for the manufacturer.______________(46)"It tracks your child."
"It only starts working when the device is connected to the child'5 wrist,"Salmon said,"and is very
difficult to get off."______________(47)"It would give you a Google Maps image with their exact location,the
street name and the zip code."
When a child is wearing the device,a parent sends the text message"where are you"and the child'S
current location is sent back to a mobile phone or computer.______________(48)
" You can also set up a perimeter（界限）, an invisible fence , and if they wander out of this invisible
fence which you put on the Internet it will warn you,"Salmon said.______________(49)
Salmon said the device is waterproof and shockproof and lasts for three days with a full charge.It will be
available in both Britain and the United States this year and retails for 200 dollars with a 10 dollar a month
subscription（订阅）fee.
He said the company had received thousands of inquiries about the device since launching it this week.
" Fifty percent are positive , 50 percent are negative , that it ' s a bit Big Brotherish（干涉人身自由的）," he
said. _____________(50)
________(50)
A:"It will text you immediately."
B:Double fixing devices easy to handle.
C:Parents can also log on to the company website to discover their child's present location.
D:"It uses GPS and GSM(Global System for Mobiles)technology with an accuracy of 10 feet(threemeters),"he said.
E:"But it's really just about letting you have freedom of mind."
F:"Even if the child managed to get it off it would send an emergency text message through to your mobile phone,"he said.
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