40. What is this passage mainly about?
(A) The application of lighting technology in modern society.
(B) The uses and limitations of a scientific invention by a research team.
(C) The adoption of light manipulation techniques in medical treatment.
(D) The influences and effects of scientific developments on science fiction.
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統計: A(6), B(36), C(7), D(10), E(0) #617497
統計: A(6), B(36), C(7), D(10), E(0) #617497