C
Members of Parliament (MPs) warned that the privacy（隐藏）of thousands of mobile phone users is in danger today because of Google's new tracking system. In a motion（提案）,they also warned that the system offers live tracking of mobiles through a website and called on Google to examine the service.
The Latitude system can find where a user is . This is then broadcasted live to Google's website. Once the service is activated , the position of a person's phone appears as a blue dot on a map on the screen of whoever is allowed to monitor（监控）them . The Latitude feature is being developed by Google as a "fun" way to "keep tabs on someone special", More than a million users around the world have already signed up to the service, Google claims .
However, concerns have been raised about the system. MPs have written to Google demanding extra security(安全) safeguards on the service。
Mr. Brake , one of the MPs who raised the motion, said , "In Britain, we have a tradition of fighting for our freedom. With this new system we face a threat to it . I demand MPs to support this motion and encourage the Government to take action to ensure that Latitude does not represent a threat to our privacy. or our freedom could be in danger."
Google today insisted there was no threat to privacy .It said it was up to users to decide whether to make their location visible to other people and to decide who could monitor their position .The service was designed to help people keep in touch .
However , human rights watchdog Privacy International analyzed the service and claimed it was open to abuse（滥用）. Its report claimed employers could supply employees with phones already set up to use the service without their knowledge, or that users could simply sign up their partner's or child's mobile phone without telling them .
49．MPs’ reactions to the tracking system are the following EXCEPT that___________-.
A．they have raised a motion
B．they have required Google to examine the service
C．they hope that the Government will take some measures
D．they are trying to get help from other countries
50．The underlined part “keep tabs on” in paragraph 2 probably means_________.
A．phone       B．support     C．test    D．monitor
51．Why have so many people signed up to use the new tracking system?
A．They want to know each other’s privacy.
B．They think it is fun and can help them keep in touch.
C．They can get it at a lower price.
D．It’s convenient to travel across the world.
52．The Google’s attitude to the new tracking system is__________.
A．regretful   B．polite         C．doubtful     D．positive