问题
判断题
雷电时间短,一般雷击分为3个阶段,即先导放电、主放电、余光放电。
答案
参考答案:对
雷电时间短,一般雷击分为3个阶段,即先导放电、主放电、余光放电。
参考答案:对
完形填空。 | ||||
This is a __1__ of Jim's family. The man __2__ the picture is Jim's father, Peter. There __3__ a woman __4__ Jim. __5__ is Jim's mother, Gina. Who __6__ this boy and __7__ girl? The __8__ is Jim, Peter's son. The girl is Kate, Peter's __9__. Kate is Jim's sister. Jim and Kate are __10__. | ||||
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