A. B. C. D. E.
下列气候类型主要分布在赤道附近的是( )
It is difficult for us to imagine_____ life was like for slaves in the ancient world.
实验次数
加入稀盐酸的质量/g
剩余固体的质量/g
1
20
15
2
10
3
6.8
4
n
根据实验数据计算: