問題詳情
【題組】47. Which of the following is NOT an advantage of smart home systems?
(A) They are not very expensive.
(B) They can be controlled from smartphones.
(C) They can do housework for you.
(D) They make you feel safe.
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
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