下列子宫动脉的描述，不正确的是（）。

A.子宫动脉由髂内动脉前干发出

B.其分支分别供应子宫、输卵管、卵巢及 * * 上部

C.子宫动脉频谱正常波形为收缩期峰尖锐舒张期速度减低

D.频谱随月经周期无明显变化

E.子宫两侧的血供相同

31．____his membership card，Tony decided to make a phone call to check whether there was something wrong．

A．Having not received

B．Not receiving

C．Not received

D．Not having received