患者男，72岁，因“无痛性血尿2周”来诊。超声（见下图）：膀胱三角区低回声区，约20

根据所给图片完成短文。

     One day, Mr. Li was    1     a book in his office after school when a ball broke the window

and flew in.. The ball    2     him on the head. So he took the ball and came downstairs to see

who threw the ball .He met a boy at the doorway and the boy said that he threw it just now.

The boy said     3    to Mr. Li and Mr. Li praised the boy for his honesty. At last Mr. Li told

the boy to be more careful next time. The boy    4     him and said goodbye to him, running

away    5     the ball.

1._____ 2._____ 3._____ 4._____ 5._____ 

有4种混合溶液，分别由等体积0.1 mol/L的2种溶液混合而成：①CH₃COONa与HCl;②CH₃COONa与NaOH;③CH₃COONa与NaCl;④CH₃COONa与NaHCO₃ 下列各项排序正确的是[ ]

A．pH：②>③>④>①

B．c(CH₃COO^-)：②>④>③>①

C．溶液中c(H⁺)：①>③>②>④

D．c(CH₃COOH)：①>④>③>②

猪乙型脑炎通过______传播( )。

A．空气

B．食物

C．蚊虫

D．饮水

E．蝙蝠

伤寒的主要病变部位

A．胃、十二指肠
B．小肠
C．回肠末端
D．盲肠、升结肠
E．直肠、乙状结肠

主动脉关闭不全的血流动力学改变。