为稍隆起皮肤表面的苍白色或红色局限性水肿的是
A．斑丘疹B．荨麻疹C．斑疹D．丘疹E．玫瑰疹
参考答案：B
—What can we do to help others?
—We can ______ a food bank to help hungry people.
A．put up
B．set up
C．pick up
D．show up
牙本质暴露但未露髓的冠折牙，形成足够修复性牙本质的时间是
A．冠折后2～4周
B．冠折后4～6周
C．冠折后6～8周
D．冠折后8～10周
E．冠折后10～12周
