A、They have brought in the new way of communication. B、They have explored more chances to communicate. C、They have strengthened

Cell phone feels like a part of your body?(19)A global survey has found that most people can’t live without their mobiles, never leave home without them and, if given a choice, would rather lose their wallet. Calling mobile phones the "remote control" for life, market research firm Synovate’s poll said cell phones are so universal that by last year more humans owned one than did not.
    Three-quarters of the more than 8,000 respondents polled online in 11 countries said they take their phone with them everywhere, with Russians and Singaporeans the most attached.(20)Some two-thirds of respondents go to bed with their phones nearby and can’t switch them off, even though they want to, because they’re afraid they’ll miss something.
    "Mobiles give us safety, security and instant access to information. They are the number one tool of communication for us, sometimes even surpassing face-to-face communication. They are our connections to our lives," Jenny Chang, Synovate’s managing director in Taiwan, said in a statement.
     (21)Mobiles have also changed the nature of relationships, with the survey finding nearly half of all respondents use text messages to talk with their beloved one, a fifth set up first-dates via text and almost the same number use the same method to end a love affair.
    Apart from the obvious calling and texting, the top three features people use regularly on their mobile phones globally are the alarm clock, the camera and the games.
19. What is the finding of the global survey?
20. Why do some people go to bed without switching off mobile phone?
21. How have mobiles changed one’s life?