Since our research so far has not produced any answers to this problem,we need to adopt a different________to doing it.
A:approach
B:means
C:method
D:way
对于质点的运动,下列说法中正确的是( )
作文成绩优秀
作文成绩一般
总计
课外阅读量较大
22
10
32
课外阅读量一般
8
20
28
30
60
由以上数据,计算得到K2的观测值k≈9.643,根据临界值表,以下说法正确的是( )
用括号内所给词的适当形式填空(5分)