阿摩線上測驗
41. What does “This” in the first paragraph refer to?
(A) Flickering light is a nuisance.
(B) Light flashes can deliver messages.
(C) The brain can be affected by lighting.
(D) Human eyes can perceive changes in light.
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統計： A(10), B(96), C(13), D(14), E(0) #1838150
統計： A(10), B(96), C(13), D(14), E(0) #1838150
