参与脂酸β-氧化过程脱氢的酶类是
A．脂酰CoA脱氢酶B．HMG-CoA合成酶C．β-羟脂酰CoA脱氢酶D．HMG-CoA还原酶
参考答案：A
轴对称变换不改变图形的______与______．成轴对称的两个图形中，对应点的连线被对称轴______．
Lucy was so excited _______she received an invitation from her friend to visit Beijing.
A．where
B．that
C．why
D．when
