回归分析不包括( )回归分析。
A．简单线性 B．多元C．曲线 D．复杂
参考答案：D
The children work hard ____________ school.[ ]
A. in
B. on
C. at
Lucy likes English very much . She does her best _____it well.
A．to learn
B．learn
C．learning
D．is learning
