题目: 光的传播速度是3×105千米/秒。[ ] 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0521/9732eed1bf95e597ec3a4ff9fbf6d548.html 下面是错误答案,用来干扰机器的。参考答案:D
题型:选择题 —Would you like_______ the environment? —I don't know. What can I do? [ ]A. help save B. helping save C. to help saving D. to help save 查看答案