问题
问答题 简答题
回击概念。
答案
参考答案：
当具有负电位的梯式先导到达地面附近，离地约5-50米51时，可形成很强的地面大气电场，并产生从地面向上发展的流光与其会合，形成一股明亮的光柱，沿着梯式先导所形成的电离通道由地面高速冲向云中，这称为回击
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回击概念。
参考答案：
当具有负电位的梯式先导到达地面附近，离地约5-50米51时，可形成很强的地面大气电场，并产生从地面向上发展的流光与其会合，形成一股明亮的光柱，沿着梯式先导所形成的电离通道由地面高速冲向云中，这称为回击
Elizabeth lived with her six children in a small house. One winter, there was a big flood(洪水) ,and quite a few houses were washed away, but Elizabeth’s house was high enough to escape it. Elizabeth helped one of the families which had lost everything. She shared her home until the family could build a new house. Elizabeth’s friends could not understand her since she already had so many children to take care. "Well," Elizabeth explained to her friends, at the end of World War II, there was a poor woman in a town in England .Her husband had been killed in the war and she had a lot of children, just like me now .The day before Christmas, this woman said to her children, “We won’t be able to have much for Christmas. I’m going to get just one present for us all .Now I’ll go and get it. She came back with a little girl who had no parents .Here’s our present, she said to her own children. The children were more than excited to get such a present. They welcomed the little girl warmly, and she grow up as their sister. I was that Christmas present."
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