堆积阶地
参考答案：
阶地面和阶地斜坡全由河流沉积物组成，无基岩暴露。这种阶地在山地边缘地带出露较多。
The two sisters are_______ different in character --- one talks a lot while the other is a girl of few words.
A．exactly
B．entirely
C．frequently
D．finally
下列哪一项不是肩关节周围炎的主要功能障碍()
A．肩痛
B．肩部活动受限
C．肌肉萎缩
D．肱二头肌硬结
E．手臂麻木
