48. What is true about acetaldehyde?
(A) It can protect the human body from esophageal cancer.
(B) It is not good to have it stay in your body for a long time.
(C) It contains a substance that circulates blood to the face.
(D) It immediately raises the bold pressure.
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統計: A(6), B(153), C(61), D(36), E(0) #1780093
統計: A(6), B(153), C(61), D(36), E(0) #1780093