阿摩線上測驗
8. Everybody needs sunlight to produce vitamin D, but excessive _____ to the sun’s ultraviolet rays can cause damage to the skin and immune system.
(A) nutrition
(B) diet
(C) payment
(D) exposure
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統計： A(0), B(0), C(0), D(9), E(0) #4061405
統計： A(0), B(0), C(0), D(9), E(0) #4061405
