阿摩線上測驗
35. What is another possible way to harvest energy?
(A) Turn on the lights with a switch.
(B) Collect it from invisible sound waves.
(C) Put batteries into different devices.
(D) Reuse compost by burning it up.
答案：登入後查看
統計： A(1), B(1), C(0), D(0), E(0) #3360010
統計： A(1), B(1), C(0), D(0), E(0) #3360010
