請依下文回答第 16 題至第 20 題：   Due to the growing popularity of high-speed internet connections. Wi-Fi, the easiest way to enableseveral computers to share the same broadband link, was developed years ago. This fast method ofwireless data   16   has made the flow of large amounts of information easily available and can beconveniently   17   with no waiting. Due to all the rapid changes in science and technology, it may, however,be replaced in the   18   future by an even faster technology called Li-Fi.In 2011, Professor Harold Hass at the University of Edinburgh introduced Light Fidelity (Li-Fi) to thepublic. This advanced technology, which supports multiuser access and enables roaming, uses visible light totransport data. Its lightning speed, which is 100 times faster than the average Wi-Fi, can transfer one gigabyteper second. That is, music, or even movies can be downloaded in just seconds. In addition to its   19   speed,the security of Li-Fi is better than Wi-Fi, which is   20   for aircrafts or hospitals where high security isexpected. Li-Fi will no doubt change the way we use and send data.
【題組】16
(A) transaction
(B) transition
(C) translation
(D) transmission