Which underlined part is different from the others in pronunciation?
A: Sunday
B:today
C: everyday
D:birthday
根据人体的三种血管关系示意图,回答问题
x
0
1
3
4
y
2.2
4.3
4.8
6.7
从散点图分析,y与x线性相关,且 y^ =0.95x+a,则a=____.
我们说春秋战国是大变革的时期,是因为( )
已知,若函数y=f(x)﹣c的图象与x轴恰有两个公共点,则实数c的取值集合是( )