确诊肾盂输尿管重复畸形的主要方法为（）
A.排泄性尿路造影
B.USG检查
C.CT检查
D.MRI检查
E.逆行性肾盂造影
参考答案：A
— ______ it is today!
— Yes, I agree, but ______ swim in the river. [ ]
A. What a fine weather, not
B. How fine weather, can't
C. What fine weather, don't
D. How fine a weather, don't
乙炔在溶液中的（）随温度的升髙而降低
A.温度
B.仪湿度
C.溶解度
