阿摩線上測驗
5. Which of tiie following statements of lenses is true?
(A) Nearsighted glasses use concave lenses.
(B) Farsighted glasses use concave lenses.
(C) Simple magniiying glass uses concave lenses.
(D) Ail of the above.
(E) None of the above.
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統計： A(12), B(1), C(0), D(1), E(0) #3222772
統計： A(12), B(1), C(0), D(1), E(0) #3222772
