硝普钠主要用于（）
A.高血压危象
B.中、重度高血压
C.重度高血压
D.轻、中度高血压
E.中度高血压伴肾功能不全
参考答案：A
He insisted that he ____ that and that he ____ free. [ ]
A. didn't do; was set
B. hasn't done; is set
C. hadn't done; be set
D. hadn't done; should set
地基沉降使墙体产生“正八字”裂缝的原因是( )。
A．两端沉降比中部沉降大
B．左边比右边沉降大
C．中部沉降比两端沉降大
D．右边比左边沉降大
