下列图形中,既是中心对称图形,又是轴对称图形的是[ ]
A.正三角形
B.平行四边形
C.等腰直角三角形
D.正六边形
答案:D
The sports meeting of our school will be held next month.Which________ are you going to enter for?[ ]
A. affairs
B. events
C. matters
D. programs
口中时吐黏涎者,多属
A.脾胃虚寒B.脾胃湿热C.脾虚不能摄津D.胃中有热或宿食内停E.胃热虫积