患者四肢关节疼痛，酸楚沉重，肌肤不仁，阴雨天加重。其病因主要是（）。
A.风邪
B.寒邪
C.暑邪
D.湿邪
E.燥邪
参考答案：D
行于上肢内侧后缘的经脉是( )
A．心经B．肺经C．心包经D．脾经
—A small number of students ______ to school by subway.
—The number of the students ______ 13.
A．go, are
B．goes, is
C．goes, are
D．go, is
