肝硬化门脉高压形成
A．舟状腹B．蛙腹C．局部膨隆D．揉面感E．板状腹
参考答案：B
若一个菱形的边长为2，则这个菱形两条对角线的平方和为[ ]
A、16
B、8
C、4
D、1
He had a wonderful childhood,_____ with his mother to all comers of the world.[ ]
A. travel
B. to travel
C. traveled
D. traveling
