民族英雄文天祥在的诗中有“臣心一片磁针石,不指南方不肯休”的诗句.这里的磁针石是由于受到 的作用,其南极指向地理位置的 极.
We can not enjoy more on the journey if we go too f (快速地).
Never c (横穿) the street when the red light is on.
When the sun goes down, the s (星星) come out.
The engineers are going to t (测试)the self﹣driving car in our city.
We will go climbing tomorrow if the weather is f (晴朗的).