阿摩線上測驗
31. Why is the concept of energy harvesting becoming popular?
(A) Because people are worried about money.
(B) Because we constantly need more forms of power.
(C) Because people don't like to move too much.
(D) Because the gadgets we own are getting more expensive.
答案：登入後查看
統計： A(0), B(1), C(1), D(0), E(0) #3360006
統計： A(0), B(1), C(1), D(0), E(0) #3360006
