D. Lena Horne took an active part in sports activities.

　　42. This text is developed

　　A. by space

　　B. by time

　　C. by process

　　D. by comparison

　　D

　　A group of Russian criminals have stolen l.2 billion username and password combinations for more than 500 millione-mail addresses. It's the largest known theft on the Internet, according to a report of The New York Times.

　　Cyber security firm Hold Security discovered the security breach(漏洞 ).

　　The firm found that the group of criminals collected personal information from 420,000 websites, including household names and small Internet sites. The criminals were based in a small city in south central Russia. They hacked websites inside Russia as well as big companies in the U.S. and other countries ,The New Times reports.

　　The criminals found hundreds of thousands of weak websites and attacked their coding，Hold Security said. Alex Holden is chief information security officer of Hold Security. “The hackers did not just target U.S. companies；they targeted any website they could get，” Holden said. “And most of these sites are still easy to attack”.

　　According to Hold Security, the criminals have been using the stolen information to send junk mail through e-mail and on social networks like Twitter.

　　They can also use the 500 million stolen e-mail -addresses to plan other crimes.

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