血尿的常见原因不包括（）。
A.输尿管结石
B.急性膀胱炎
C.IgA肾病
D.单纯性肾囊肿
E.膀胱癌
参考答案：D
解析：单纯性肾囊肿不常出现血尿。
“秦晋之好”现在泛指两国之间的友好关系。（）
Cribbing is（）.
A.wooden blocks or dunnage placed between a deck load and the deck
B.the chains and shackles used to secure a deck cargo
C.a crate in which a deck cargo is packaged
D.cardboard separation pieces placed between deck loads to prevent chafing
