单词拼写。

1. The manager decided to____ (推迟) the meeting.

2. There____ (过去有) a beautiful park. But now it has disappeared.

3. ____(没关系) if you don't have enough money.

4. Reading in bed ____ (对……不好) your eyes.

5. ____ (坚持) your dreams, and some day you maybe just succeed.

预防性树脂充填操作哪项是错误的

A．用手机去除龋坏组织，去除悬浮釉柱，做预防性扩展

B．．彻底冲洗，干燥，隔湿

C．C型酸蚀前将暴露的牙本质用氢氧化钙垫底

D．酸蚀合面和窝洞

E．用适当的树脂材料充填，固化后在合面涂布一层封闭剂