问题
单项选择题 A1型题
已知t0.05/2,18=2.101,则区间(-2.101,2.101)与曲线所围面积是()
A.2.5%
B.5.0%
C.95.0%
D.97.5%
E.99.0%
答案
参考答案:C
已知t0.05/2,18=2.101,则区间(-2.101,2.101)与曲线所围面积是()
A.2.5%
B.5.0%
C.95.0%
D.97.5%
E.99.0%
参考答案:C
从方框中选择适当的句子完成下列对话(其中有一个选项是多余的)。 | |
B: Hello! 1______ A: Sorry. 2______ Who is this? B: This is Li Lan, Yang Fang's classmate. 3______ A: Sure. Does he have your phone number? B: 4______ My phone number is 2835432. A: 2835432. 5______ B: Thank you. Bye. A: Bye. |