阿摩線上測驗
46 What is the most important reason that people do NOT buy household robots today?
(A) They are still not very safe.
(B) They are too difficult to use.
(C) Their power can’t last long.
(D) They cost a lot of money.
答案：登入後查看
統計： A(19), B(23), C(21), D(85), E(0) #1289772
統計： A(19), B(23), C(21), D(85), E(0) #1289772
