CyberAngels is the world's oldest and largest online safety organization. More than 1300 v

olunteers patrol the Web 【C1】______ the clock, 【C2】______ child pornography (色情图像) and trying to protect 【C3】______ people from stalkers (潜步追踪猎物者), pedophiles (恋童怪癖患者) and other cybercriminals.

Working from home computers in more than 14 countries, most CyberAngels have never met face 【C4】______ face. Yet they form. a 【C5】______ team on the 【C6】______ Internet.

Their leader is a New Jersey woman who 【C7】______ the group's drive and spirit. In 1998 Parry Aftah 【C8】______ to her job as a managing partner of an international law firm specializing 【C9】______ the Internet. Then a friend, who had 【C10】______ CyberAngels in 1995, told her the group's executive director had 【C11】______ . Aftab agreed to 【C12】______ the post, but only 【C13】______ a temporary basis.

Days later someone sent Aftah the Internet address of a pedophile website showing a young girl being sexually 【C14】______ . Seeing the girl's visible suffering, Aftab wept. Then she removed "temporary" 【C15】______ her title. "There was no going hack," says Aftab, who denotes the 【C16】______ of her waking hours to CyberAngels 【C17】______ practicing law part time.

Often CyberAngels works with local and state 【C18】______ forces, the FBI and law enforcement agencies around the world to 【C19】______ online pedophiles and child pornographers. In October, 1999, Aftab traveled to Japan to help police 【C20】______ illegal child-pornography sites. The result: the first-ever arrests in Japan of alleged Internet child pornographers.

【C1】

A．around

B．on

C．at

D．through