易与正常右侧肾上腺相混淆的结构有（）。
A.结肠肝区气体
B.腹主动脉
C.右侧横膈角
D.右肾囊性占位
参考答案：C
To his surprise, his new play well ____ by the public in China, met a cold welcome abroad.
A．received
B．accepted
C．accepting
D．receiving
程序流程图中带有箭头的线段表示的是
A) 图元关系 B) 数据流 C) 控制流 D) 调用关系
