物体的()永恒不变。
A、质量
B、重量
C、能量
D、动量
参考答案:A
We are invited to a party _________in our club next Friday.
A.being held
B.held
C.to be held
D.holding
寐时眼睑张开而不闭之露睛,多是()
A.元气虚惫
B.气血两虚
C.肾精不足
D.脾虚气弱
E.肝风内动