With this spring’s sports meet on 26th,April______, we find the track on the play ground newly______ with white paint and students of each class more united than ever.

A．in the corner, mark

B．around the corner, marked

C．in the corner, marking

D．around the corner, be marked

固位体设计哪项是错误的

A．嵌体的固位效果最差

B．桥体跨度越长、越弯曲，骀力越大者，固位体的固位力越小

C．基牙两端的固位体固位力应基本相等

D．各固位体之间必须有共同的就位道

E．应防止基牙牙尖折裂