您还没有登录,登录以后才可以查看答疑和进行提问。

试题详情

Slight but _____ variation in the timing of the star’s pulses led astronomers to deduce that it was being pulled backwards and forwards by three planets orbiting around it.
答案:B

专业教师答疑

6
评分
6
浏览

Text Completion

出了排除法可以选出B 还有别的方法吗?如何找取反对应?

问个问题