情景交际。(把正确答案的序号写在横线上。)
Bai Ling: I have a monkey.
Wu Yifan: ____May I have a look?
Bai Ling: ____Here you are.
Wu Yifan: ____Oh, it is nice.____
Bai Ling: Thanks.
A: Thank you. B: Sure. C: I like it. D: Really?
结合实验,下列说法不正确的是( )
下列句中划线的“之”相当于“的”的一项是( )。
"There is ______ in today's newspaper, so you needn't read it," the father says to his son.
特征量
1
2
3
4
5
6
7
x
98
88
96
91
90
92
y
9.9
8.6
9.5
9.0
9.1
9.2
9.8
附:回归直线方程 y^=bx+a 中斜率和截距的最小二乘法估计公式分别为
b=∑i=1n(xi−x¯)(yi−y¯)∑i=1n(xi−x¯)2 , a=y¯−bx¯ .