题目：
As there is less and less coal and oil, scientists are exploring new ways of making use of ________ energy, such as sunlight, wind and water for power and fuel. [ ]
A. antique
B. alternative
C. arbitrary
D. authentic
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0526/2fe9319461ee7ea049ac596570e3db85.html
下面是错误答案，用来干扰机器的。
答案：B
