__2__．found several problems from policies promising to guard __3__ information and e－mail addresses at 21 of the most popular medical Web sites.rnet security consultant who conducted the

　　__4__．For example__5__

　　telling visitors.For example，a person might __6__ information about a particular disease，such as AIDS or depression，thinking he or she was anonymous(匿But Web sites can track a visitor's __7__ in several ways，sometimes without telling them.Some companies keep __8__ of which advertisements a user clicks on.Ten of the health Web sites surveyed had __9__ with those companies.

　　“There is a very big problem with personal __10__ being given to ad companies..，the value here is tremendous from a marketing standpoint，” said Smith.Such data－collecting occurs throughout the Internet__11__ more information than others.

　　While the consequence of health data __12__ online may be nothing more than unwanted e－mail and advertisements__13__

　　that sensitive information could be abused by employers，insurance companies or others.

　　Smith said that he hoped the finding would prompt Web sites to __14__ privacy protection，and alter __15__ any time they were collecting information.

　　【语篇导读】　网络上私人信息被泄露给人们的生活造成困扰。解析　根据本句的含义：Internet heath sites(健康网址)一直收集并与其他公司分享(share)网络访客(visitors)的私人信息。答案　Aafety

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