問題詳情
【題組】27. What can we learn from the letter?
(A) Too much melatonin can hurt teenagers’ brain.
(B) The brain stops making melatonin after 11 p.m.
(C) Sleeping longer helps the body make more melatonin.
(D) It is easier to fall asleep when the brain is making melatonin.
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增
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