Sometimes it was a bit boring to work there because there wasn't always ______ much to do. [ ]

A. such

B. that

C. more

D. very

不会造成利尿肾图准确性下降的原因是（）。

A.肾盂输尿管连接部狭窄或高位连接

B.肾功能明显受损

C.肾动脉狭窄

D.神经性膀胱

E.输尿管鹿角样结石