观测次数i
1
2
3
4
5
6
7
观测数据ai
8
A:1
B:87
C:97
D:107
如图是比较花生仁、大米、牛肉干三种食物所含能量多少的活动示意图。对于该活动,下列说法错误的是( )
在含有大量 Mg2+、H+、SO42﹣的溶液中,还可以大量存在的是( )
⑴What is this? ____ A. Thursday.
⑵What are these?____ B. Yes, it is.
⑶What is she wearing?____ C. They're shorts.
⑷Is this a new cap?____ D. She is wearing a blue skirt.
⑸What day is today?____ E. It's a new T-shirt.
In the second paragraph, we know ____________.