A：K+、Mg2+、SO42﹣、OH﹣
B：Na+、H+、Cl﹣、HCO3﹣
C：K+、Ag+、NO3﹣、Cl﹣
D：K+、Cu2+、SO42﹣、NO3﹣
青藏牧区所在的地形是（ ）
下列民居中，体现气候湿热的是
我是小法官。
Mike and John: Happy birthday to you, Sarah!
Sarah: Thank you.
Mike and John: How old are you?
Sarah: I'm ten.
Mike and John: These are for you. A cake and two kites!
Sarah: Thank you. Let's eat the cake.
Mike and John: Great!
阅读对话，判断对错。
