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With the grand ambition of sending unbreakable coded messages, some physicists are using exotic tools-quantum mechanics and streams of individual photons-to shut out (i)_____. But a wire and a few resistors may (ii)_____ a message as securely, according to a physicist who claims to have devised a simple and uncrackable scheme. The idea shows that more (iii)_____ methods might compete with budding quantum cryptography.
- inaccurate transmissions
- pernicious influences
- prying eyes
prying eyes , convey , mundane 显示答案