问题
填空题 案例分析题
读下图，回答下列问题。
A、B两个不连续界面之间是地球内部分层的（），主要物质成分是（）。
答案
参考答案：地幔；铁和镁的硅酸盐
搜题请搜索小程序“爱下问搜题”
读下图，回答下列问题。
A、B两个不连续界面之间是地球内部分层的（），主要物质成分是（）。
参考答案：地幔；铁和镁的硅酸盐
| 选择合适的单词填空，将短文内容补充完整。 | |
to his mother do . On the second day, he's going to his grandparents. He's going by . On the third day, he's going to a trip his parents. He will come back home on the sixth day. He's coming plane. At last, he's going to the and buy some food. He will a good time. |