腹部标志中耻骨联合下缘对应（）
A.卵巢
B.前列腺
C.子宫
D.直肠
E.膀胱
参考答案：B
The days when he was_________ his best is already a thing of the past.
A．in
B．on
C．at
D．with
农用一级品尿素中H2O的含量：（）
A.≤0.38%
B.≤0.25%
C.≤0.4%
