In Britain, robot sales appropriately peaked in 1984, but (26) _____ declining ever since. This is partly (27) _____ British wage mates are too low to make robots financially attractive and partly because engineers now have more experience with robots and are more aware of (28) _______ difficulties of introducing them effectively. It has been calculated that a robot uses on average about 100 times more (29) _____ than a human to do an equivalent job. It is estimated that 20% of all comic book heroes in Japan are robots. This is an enormous number because comics are so (30) ____ that makes up a third of all material published in Japan.
(Adapted from “Chiến lược luyện thi THPT, Nguyễn Lâm, NXB Đại học Quốc Gia HN)
A.popularize
B.popular
C.popularly
D.popularity
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