A:K+、Na+、NO3﹣、SO42﹣
B:K+、Na+、Cl﹣、Cr2O42﹣
C:Al3+、K+、AlO2﹣、Cl﹣
D:Fe3+、NO3﹣、SO42﹣、NH4+
把6米长的绳子平均分成7段,每段占全长的几分之几?每段长多少米?
某中学地理夏令营到野外考察,考虑到暴雨可能引发山洪而产生危险,要求同学们不准在甲地搭帐篷宿营。读图,回答问题。可能爆发山洪的甲地,其地形部位是( )
卫星云图上云层用表示( )
根据上下文,完成对话
(1)A: What's ____ name?
B: His name ____ Tome White.
A: What's his ____ ____?
B:____ 62278092.
(2)A: What's her ____ name?
B: Mary.
A: And what is her ____ name?
B: White. She is Mary White.