哺乳类与鸟类相似的特征是（）。
A、皮肤干燥
B、恒温
C、皮肤富有腺体
D、头骨1个枕骨髁
参考答案：B
It was very windy and cold, _____ they were still working hard in the field.
A. as B. till C. but
心悸，失眠，盗汗，颧红，手足心发热，脉细数，舌红少苔。为（）
A．表实寒
B．表实热证
C．里实寒
D．里虚热证
